Identify the block and period for 3s2 3p5
Answers
Answered by
6
Answer:
Explanation:
17 th group.
3rd period
Answered by
2
Answer: 17th group
3rd period
Explanation:
This is the configuration of element atomic no 17 on periodic table, which is chlorine.
The config is
1s² 2s² 2p6 3s² 3p5
As for the electron is in 3rd orbital(valence electron is in 3rd orbital) so 3rd period.
As of now 3rd period means the group will fall in 10+7=17 ,as 7 is the no of valence electrons,
For block we see the last orbital is p orbital. There are 5 electrons which is present in p orbital. And it can accommodate one more electron to get to nearest noble gas configuration.
Hence the block is p block
Similar questions