Question

The element ‘X’ includes in 15th group. It has 3 shells. Answer the following questions. (a) Subshell electronic configuration. (b) Period number (c) Block​

Answer 1

Answer:

a) Subshell electronic configuration = 1s²,2s²,2p⁶,3s²,3p³

b) Period no. is 3, as number of shells is 3

c) Block is p-block, as last electron present in p orbital

The element X is Phosphorous

hope this will help you