Question

Which of the following is the valence shell for the elements of second period of the modem periodic table?

• A. M shell
• B. K shell
• C. L shell
• D. N shell

Answer 1

Answer: (C)

L shell

L shell is the valence shell for the elements of the second period of the modem periodic table.
The second period called first short period and it contains eight elements. This period corresponds to filling up of L-shell. In this period electrons occupy 2s and 2p orbital. This period contains 2 elements of S-block and six p-block.