engineering recuitment FCI JE 2022 Mock Test for CE/ME/EE (Phase I & II) General Science Chemistry Classification of Elements and Periodicity in Properties
Non-metals generally contain ________ electrons in their outermost shell.
1
1, 2 or 3
2
5, 6, 7 or 8
3
8, 9 or 10
4
10 to 8
5
None of the above