Chemistry, asked by himabindudeepak, 4 months ago

1 point
6.An element has atomic
number 20 and in group 2 and
period 4. Which option gives
the number of valence
electrons and shells present in
the element? *
3 and 8
4 and 2
O2 and 4
O 3 and 2​

Answers

Answered by kushmita07
26

Answer:

option c is the correct answer.

2 and 4

Explanation:

number of valence electron = 2

4S2 sub-shell , so sub-shell is 4s

and it is Ca (calcium)

it's my pleasure to help you.

please mark me as Brainliest and give me Thanks dear........❤️❤️❤️

Answered by helper574
1

Answer:

4 and 2 are correct answer

Similar questions