Chapter 2 Stucture of Atom (0001)

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CHAPTER 2

THE STRUCTURE OF THE ATOM AND PERIODIC TABLE1993

4 The proton number of element X is 12. The chemical properties of element X is

same as element that has proton number A 8

B 10

C 14

D 20

1993

5 Element L and M each have 9 and 17 proton number.Which of the following statement is true about element L and M?

A Reaction element M with sodium is more reactive than L

B Relative atomic mass element M is bigger than L

C Element M is more electronegative than LD Reaction of element M with water is more reactive than L

1993

6 Which of the ionic pairs have same electron number?[Proton number : K ,19 ; Na ,11 ; Ca,20 : Mg,12 ; Cl,17 ; O,8 ]

A K +

and Na+

B Ca2+

and Mg2+

C K +

and Cl-

D Ca2+

and O2-

19937 Which of the following statements are ionic compound properties?

A Need more heat to overcome the force between particles

B Electric conductor in solid state

C Dissolve in organic solvent

D Particles in solid ionic compound move freely

1993

9 Aluminium atom is differ than aluminium ion because it has

A more protons

B more electrons

C smaller size

D more number of neutrons



1994

3 Elements G, J, L and M have proton number of 11, 15 , 17 and 19 consecutively.

Arrange all the element decreasing order of atomic size

A G, J, L , M

B G, M, J, LC M, L, J, G

D M, G, J, L

1995

5

Element Proton Number Ionic Formula

VW

XY

89

1120

V2-

W

-

X+ Y

2+

Table 2

Which ion in Table 2 has electron number as same as chloride ion?[Proton Number: Cl, 17]

A V2-

B W-

C X+

D Y2+

1995

32

Particle Proton Number Nucleon Number Number of Electron

E

QR

T

11

1117

17

23

2335

37

10

1117

17

Table 4

Which of the following is true based on the particles in table 4 ?

I E and Q are same particle of elementII E is positive ion of Q

III Reaction between Q and R formed ionic compound

IV R and T are isotope for same element

A I and III only

B II and IV only

C I , II and III only

D I, II, III and IV



1996

2 What is the similarity between fluoride ion and magnesium ion?[Proton Number : F, 9 ; Mg, 12 ]

A Nucleon number

B Number of proton

C Number of neutronD Number of electron

1996

30 Which of the following Scientist is true about his discovery?

Scientist Discovery

A Lavoisier Antibiotic

B Flemming Ammonia preparation process

C Haber Redox Theory

D Berzelius Chemical symbol using alphabet

19974 Which of the following scientist is true regarding his atomic theory?

Scientist Theory

A Neil Bohr Electrons move in shells around the nucleus

B John Dalton Atom is a sphere of positive charge and

surrounded by electron

C Ernest Rutherford Elements are made up of tiny particles called

atom

D Joseph john Thomson Alpha particle is positively charged

1997

5 Which of the following substance contains the most number of atom?[Relative atomic mass : H, 1 ; He, 4 ; O,16 ; Ne,20 ]

A 2.0 g Hydrogen

B 7.0 g Helium

C 30.0 g Oxygen

D 35.0 g Neon

1997

6

Element G J Q R T

Proton Number 8 10 12 13 15

Table 1

Table 1 shows the proton number for elements G, J, Q, R and T .Which of the following element has same number of electron with ion R?

A G

B J

C Q

D T



1997

7

Element Property

A Has low melting point

B React with tab water to form hydrogen

C Form ions with different oxidation number D Non-metal that conduct the electricity

Table 2

Table 2 shows element A, B, C and D and their property consecutively.

Which element is probably transition element?

1997

8 Element Q belongs Group 17 of the Periodic Table. Its proton number is 9.

Which of the following statement is true about Q?

A Q exist as monatomic gas

B Q is less electronegative than iodineC Boiling point of Q is higher than chlorine

D Q react with sodium to form ionic compound , NaQ

1997

31

Relative Atomic Mass metal Q is 7 and Relative Atomic Mass metal W is 56

Which of the following can be deduct from the statement above?

I 1 mole W consists 8 times more atom than 1 mole QII 1 atom W is 8 times weigher than 1 atom Q

III 1 atom W has total number of proton as same as 8 times atom QIV 56 g W has equal number of atom with 7 g Q

A I and III only

B II and IV only

C I, II and III only

D I, II, III and IV





1998

31 Group1 2 13 14 15 16 17 18

Figure 5Figure 5 shows the element represent J, Q, T and Z in Periodic Table. Which of the

following statement is true about that element?I Proton number increasing in order of J, Q,T, Z

II The charge of ion J and Q is 2 while ion T and Z is 3

III Combination of J and Q formed compound with formula JQ2 IV The electronegative is decrease in order Q, T, J.

J Q

T Z

A I and II only

B I and IV only

C III and IV only

D I,III and IV only

1999

2

Figure 2

Figure 2 shows electron arrangement for ion Q.

Which of the following statement is true about atom Q?

A Atom Q is inert gas

B Number of electron atom Q is 12C Electron arrangement atom Q is 2.8

D Atom Q placed in period 2 of the Periodic Table

e r i o d

1

2

3

4

Q

2+



1999

4 Chlorine -35 and chlorine -37 are isotopes. Number of neutron for chlorine-35 is 18.How many number of neutron for chlorine-37?

A 17

B 18

C 19D 20

1999

5 As we go across the period from left to right, the properties of substances will

change.Which of the following is the change of the property?

A Increasing the boiling point

B Basic oxide property increase

C Electric conductivity increase

D Electro negativity increase

1999

6 The charge of ion X is +2. It has 68 neutrons and 48 electrons.Which of the following symbol represent atom X?

A

B

C

D

1999

7 What is the similarity between magnesium ion and oxide ion?[Proton number: O, 8 ; Mg, 12 ]

A Nucleon number

B Number of proton

C Number of neutron

D Number of electron

118

X50

116

X50

118

X48

116

X48



1999

31

Element Proton Number Relative Atomic Mass

Q 6 12

R 8 16

Table 3Which of the following statement can be deducting from information in Table 3?

I Radius of atom Q is smaller than atom R

II Mass of atom Q is equal to 12 of atom R 16

III Atom Q and atom R have 12 and 16 neutrons consequentlyIV 12 g of element Q has same number of atom as 16 g of element R

A I and II only

B I and IV

C II and IVD III and IV

1999

32 Proton number of element J and T is 11 and 17 consequently.Which of the following is true about both elements?

I Both element located in same period of the Periodic TableII Both elements donate electron during reaction

III Reaction of element J and T formed compound which dissolve in water IV Element J is more electronegative than element T

A I and II only

B I and III onlyC II and IV only

D I, II and III only

2000

4

Particle Number of Electron Number of Proton Number of Neutron

X

Y

10

7

8

7

8

8

Table 1

Table 1 shows number of electron, proton and neutron of particle X and Y.Which conclusion is true about X and Y?

A X is positive ion

B X and Y are isotope

C Mass of 1 mole X is 16 g

D X and Y are charged particles



2000

2 Which of the following particle has same number of electron as aluminium ion?[ Proton Number: Al,13 ; Na, 11 ; Mg, 12 ; Cl,17 ]

A F

B Na+

C MgD Cl

-

2000

3 Atom Y with number of proton 17 formed an ion.

What is the electron arrangement for that ion?

A 2.8.5

B 2.8.6

C 2.8.7

D 2.8.8

200032 Sodium atom and sodium ion is differ because sodium atom

I has less protons

II has more electronsIII has less neutrons

IV is neutral

A I and II only

B II and IV only

C III and IV only

D I, II and III only



2001

4

y Proton number increases in order of P, Q, R and S

y Oxidation number of ion P is +1, ion Q is -2 and ion S is -1

y Q is more electronegative than R

Information above shows properties of element P, Q, R and S in the Periodic Table.Which of the following position is true for P, Q, R and S in the Periodic Table?

A 1 2 13 14 15 16 17 18

P Q

R

S

B 1 2 13 14 15 16 17 18

P Q

R S

C 1 2 13 14 15 16 17 18

P Q

S

R

D 1 2 13 14 15 16 17 18

S

Q

P R



2001

5

Particle Proton Number Number of electron

W

XY

Z

17

1217

12

18

1217

10

Table 1Table 1 shows proton number and number of electron for particle W, X, Y and Z.

Which of the following particle is anion?

A W

B X

C Y

D Z

2001

6 Metal element in Group 1 is differ from transition element because metal element in

Group 1

A is a good catalyst

B is highly brittle

C low density

D has high melting and boiling point

2002

1y X forms colourless compound

y X compound forms X2+ and X3+ ions

y X is used as a catalyst

Figure 1

Figure 1 shows properties of element X.X is a

A halogen

B inert gas

C alkali metal

D transition element





2003

1

Figure 1

Figure 1 shows the symbol for a chlorine atom.Which of the following is true based on the symbol in Figure 1?

Proton Number Nucleon Number Number of Electrons

A 17 37 17

B 17 20 17

C 20 37 20

D 37 17 37

2003

14

Figure 3

Figure 3 shows a model of an atom.

Which of the following is true of the atomic model?I Proposed by Neil Bohr.

II Was built based on the existence of the neutronIIII Shows that electrons move in shells around the nucleusIV Discovered through the bombardment experiment of alpha particles on gold foil

A I and III only

B II and IV onlyC I, II and III only

D I, II, III and IV

37

Cl

17

+



2003

22 Sulphide and chloride ions have the same number of [Proton Number : S, 16; Cl, 17 ]

A Charge

B Electrons

C NeutronsD Protons

2003

23 Element Y is below potassium in the same group in the Periodic table.

Determine the formula of the product and the reactivity of Y with chlorine comparedto the reaction of potassium with chlorine.

Formula of the product Reactivity

A YCl2 less reactive

B YCl2 more reactive

C YCl less reactiveD YCl more reactive

2003

24

Solid substance Melting point / oC Type of particles of four substance

GJ

LM

80320

7803 000

MoleculesIons

IonsAtoms

Table 1

Table 1shows the melting points and types of particles of four substances.Based on Table 1, which solid substance becomes an electrolyte when it is heated to

a temperature of 350 oC?

A G

B J

C L

D M



2003

32

Element Proton number

PQ

311

Table 2

Table 2 shows the proton number of elements P and QWhich of the following statements are true of the elements in Table 2

I Q is more reactive than P

II The atomic size of Q is bigger than PIII Both elements P and Q can conduct electricity

IV P and Q are in the same group in the Periodic Table

A I and II only

B I and IV only

C II, III, IV onlyD I, II, III and IV

2003

39 In the Periodic table, Y is below Z in the same group. If the proton number of atomZ is 12, what is the electron configuration for atom Y?

A 2.8.2

B 2.8.6

C 2.8.8.2

D 2.8.8.6

2003

40 The electron configuration of atom E is 2.8.7 and atom G has four valence electrons.What is the formula of the compound formed between E and G.

A GE2

B GE4

C G2E

D G4E



2004

1

The diagram shows the change of state of matter.

Which of the following is process X?A Melting

B Boiling

C Freezing

D Condensation

2004

2 Aluminium oxide has both acidic and basic properties, therefore it is

A A base oxide

B An acid oxide

C A metalloid oxide

D Amphoteric oxide

2004

22

The table shows the number of protons, electrons and neutrons of atoms Q and R.Which of the following is true about atoms Q and R?

Atom Number

Proton Electron Neutron

Q 11 11 12

R 12 12 12

A R can form a diatomic molecule.B Q and R have the same chemical properties.

C R reacts with Q to form an ionic compound.

D Q reacts with water to release hydrogen.

beaker

water beaker

water

steam

heat

Process X

heat



2004

23

Element Relative Atomic Mass

Y 80

Z 16

The table shows the relative atomic mass of elements Y and Z.

Which of the following is true about the atoms of elements Y and Z?

A The mass of one atom Z is 16 g.

B The number of protons in atom Y is 80.

C 5 moles of Z have the same mass as 1 mole of Y.

D The density of one atom of Y is 5 times that of an atom of Z.

2004

24 The information shows the sub-atomic particles of atom W.

y Electron configuration 2.1

y Number of protons 3y Number of neutrons 4

Which of the following diagrams shows an atom W?

A

B

C

D

3p + 4n

3p + 4n

3p + 4e

3p + 3e



2004

27

The diagram shows the electron shells in the substance formed between atoms of hydrogen and Y.

What is the electron configuration of atom Y?

A 2.4

B 2.8

C 2.8.4

D 2.8.8

2004

42

Which of the following substances A, B, C or D in the Periodic Table suitable to beused in the lamps

A D

B C

YH

H

H

H

A restaurant owner want to use colourful electric lamps to attract

customers .



2005

1

The diagrame shows a model of an atom .Who introduced this model?

A Neils Bohr

B John Dalton

C James Chadwick

D Ernest Rutherford

20052 Which of the following element are in group 18 in the Periodic table of elements?

A Helium and Krypton

B Hydrogen and Oxygen

C Oxygen and Krypton

D Helium , Hydrogen and Oxygen

2005

22 The table shows information about two types of particles.

Particle Proton number Electron Configuration

XY

917

2.82.8.8

Base on the information in the table, both particles X and Y are

A inert gases

B Negative ions

C Atom of metals

D Isotopes of the same element

nucleus

electron



Answer

1993

4.D5.B6.C

7.A9.B

19943.D

1995

5.D32.D

1996

2. D30. D

1997

4. A5. A

6. B7. C

8. D31. B

39. D

1998

4.A5.A

6. A31.B

1999

2. B4.D

5. D6.A

7.D31.C

32.D

20004. C

2. B3. D

32. B

20014. A

5. A6. C

2002

1. D3. C

4. A

2003

1. A14. A

22. B23. D

24. B32. D

39. C40. B

2004

1. B

2. D21. A

22.D23.C

24.A27.A

42. D

2005

1. A2. A

22. B

5. A

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Chapter 2 Stucture of Atom (0001)

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