Question

using the periodic table and your knowledge of periodic trends, answer the following questio
1 circle the best answer that has the:
a smallest electron affinity n p as sb bi
b largest electronegativity ga ge as sc
c largest ionization energy o s sc te po
d lowest ionization energy o s se te po
e smallest atomic radius f cl br i at
f largest atomic radius li na k rb cs
2 low ionization energy is a characteristic of a
3 what does atomic radius measure?
4 describe the change in the atomic size across a period and down a group.
5 which element has the largest atomic radius?
6 explain the main difference between metals and nonmetals.
7 determine if the listed pairs of elements have similar or different propert
a potassium & rubidium b calcium & barium
c sodium & chlorine d helium & krypton
e phosphorus & oxygen f lithium & fluorine
8 which element has the largest electronegativity?
9 which group (name) would have the lowest ionization energies?
10 which group (name) has the highest ionization energies?
chemistrylearner.com

Explanation:

Question 1a: Smallest Electron Affinity

Electron affinity generally decreases down a group (as atomic size increases, the nucleus is farther from the valence shell, so attraction for an additional electron is weaker). The elements N, P, As, Sb, Bi are in Group 15. Moving down the group: N (top) → P → As → Sb → Bi (bottom). So Bi is the lowest in the group, has the largest atomic size, and thus the smallest electron affinity.

Electronegativity increases across a period (left to right) and decreases down a group (top to bottom). The elements Ga, Ge, As, Sc: Sc is in Group 3, Period 4; Ga (Group 13, Period 4), Ge (Group 14, Period 4), As (Group 15, Period 4). Across Period 4, from Sc (left) to As (right), electronegativity increases. So As is the rightmost in this set, has the largest electronegativity.

Ionization energy increases across a period (left to right) and decreases down a group (top to bottom). The elements O, S, Sc, Te, Po: O is in Period 2, Group 16; S (Period 3, Group 16), Te (Period 5, Group 16), Po (Period 6, Group 16); Sc is in Period 4, Group 3. O is the topmost (smallest atomic size) in Group 16, so it has the largest ionization energy (harder to remove an electron from a smaller, more tightly held atom).

Answer:

Bi

Question 1b: Largest Electronegativity