MiscellaneousFamilies TrendsElectron

Configuration

Valence Electrons

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QUESTION:

•Which periodic family is generally unreactive?

ANSWER:

•Noble Gases

QUESTION:

•This family will lose one electron in ionic bonds.

ANSWER:

•Alkali Metals or group 1

QUESTION:

•This family generally loses 3 electrons to form anions.

ANSWER:

•Group 5, Nitrogen Family

QUESTION:

•The first 5 elements in this family end with an -ine

ANSWER:

•Halogens: Fluorine, Chlorine, Bromine, Iodine, Astatine

QUESTION:

•The family that is the second most reactive.

ANSWER:

•Alkaline Earth Metals

QUESTION:

•Ionic Radius increases in which direction on the Periodic table?

ANSWER:

•Towards the bottom left.

QUESTION:

•In which way does the electron affinity of elements increase?

ANSWER:

•Across to the right, and up the table

QUESTION:

•In which way does electronegativity of elements increase?

ANSWER:

•Across a row (right) and to the top right (up)

QUESTION:

•Does atomic radius and ionization energy increase in the same direction?

ANSWER:

•No

QUESTION:

•As you go down the periodic table electronegativity…(increases or decreases)

ANSWER:

•Decreases

QUESTION:

•Electron configuration of Beryllium (Be)

ANSWER:

•1s2 2s2 or [He] 2s3

QUESTION:

•Electron Configuration on Chlorine (Cl)

ANSWER:

•1s2 2s2 2p6 3s2 3s5 or [Ne] 3s2 3s5

QUESTION:

•Electron configuration of Iron (Fe)

ANSWER:

•1s2 2s2 2p6 3s2 3p6 4s2 3d6 or [Ar] 4s2 3d6

QUESTION:

•Electron Configuration of Cd 2+ (Cadmium)

ANSWER:

•[Kr] 5s2 4d10

QUESTION:

•Name 2 isoelectronic ions with the same electron configuration as Ne.

ANSWER:

•F- 1 Na+1

QUESTION:

•How many valence electrons are in the Halogen Family?

ANSWER:

•7

QUESTION:

•Which set of elements will have similar properties?•Hydrogen and Chlorine or Oxygen and Sulfur

ANSWER:

•Oxygen and Sulfur

QUESTION:

•Members of the same family possess similar properties. Why?

ANSWER:

•Properties depend on number of valence electrons, and elements in the same family have the same number of valence electrons.

QUESTION:

•Which shell are valence electrons found in?

ANSWER:

•The outermost shell.

QUESTION:

•Which valence electrons do you remove first when you form a cation using transition metals.

ANSWER:

•S Sublevel

QUESTION:

•What did Dimitri Mendeleev do?

ANSWER:

•Arranged elements by atomic mass

QUESTION:

•Who was H.G. Moseley and what did he do?

ANSWER:

•He rearranged the periodic table to go by atomic number

QUESTION:

•What do we usually call metals in groups 3-12?

ANSWER:

•Transition Metals

QUESTION:

•Which has a smaller atomic radius? Al^3+ or Mg^2+

ANSWER:

•Al^3+

QUESTION:

•The most active element in group 17 is…

ANSWER:

•Fluorine