A) 32
B) 10
C) 18
D) 8
Correct Answer: C
Solution :
The fifth period is from rubidium (37) to xenon (54). The last electron enters in 5s, 4d or \[5p\]orbitals. Therefore, the fifth period has (2 + 10 4-6) 18 elements.
You need to login to perform this action.
You will be redirected in
3 sec
