Question

if the sub atomic no in nucleus is = 20
protons = 7

how to draw a structure of an atom

Answer 1

Answer:

As the no. of protons is 7 , you will have to draw the structure of a Nitrogen atom. Which has 2,5 as its electronic configuration I.e 2 electrons in the K shell and 5 electrons in the L shell.

Answer 2

Answer:

a. Carbon -

$_{\ 6}^{12}\ C$

b. Oxygen -

$_{\ 8}^{16}\ O$

c. Phosphorus -

$_{\ 15}^{31}\ P$

d. Argon -

$_{\ 18}^{40}\ Ar$

e. Calcium -

$_{\ 20}^{40}\ Ca$