Periodic Properties Worksheet Key Page 3
ADVERTISEMENT
1
2
3
43
10. State which atom has a larger electron affinity according to periodic trends.
a) As, P
P
b) Li, Na
Li
c) Ge, Si
Si
d) S, Se
S
11. Explain the difference in electron affinity for each of the pairs in Problem 10.
The outer subshell of the atom with the larger electron affinity is closer to the
nucleus; therefore, when an electron is added to the atom, the electron goes closer
to the nucleus and experiences more attraction. More attraction implies more
electron affinity.
12. State which atom has a smaller electron affinity according to periodic trends.
a) Co, Ni
Co
b) C, N
C
c) Br, Se
Se
d) S, Cl
S
13. Explain the difference in size for each of the pairs in Problem 12.
The outer subshell of both atoms are the same; however, the atom with the smaller
electron affinity has a smaller nuclear charge causing less attraction for the incoming
electron. Smaller attraction implies a smaller electron affinity.
ADVERTISEMENT
0 votes
