Question

state the electronic configuration of element with element and atomic no. 7 atomic no. 18 , atomic no. 20, atomic no. 9 with elements​

Answer 1

7 attomicity is in cell called elements

Answer 2

Answer:

see down

Explanation:

ATOMIC NO. 7 - NITROGEN - 2,5

ATOMIC NO. 18 - Argon - 2,8,8

ATOMIC NO. 20 - Calcium - 2,8,8,2

ATOMIC NO. 9 - Fluorine - 2,8,1