An atom has the following electron configuration. 1s22s22p63s23p64s? How many valence electrons does this atom have? A: 2B: 3C: 5D: 11

Rolling Stone asked Aug 28, 2023

454,733 views

12 votes

Rolling Stone asked Aug 28, 2023

2.8k points

Your comment on this question:

Email me at this address if a comment is added after mine:Email me if a comment is added after mine

Privacy: Your email address will only be used for sending these notifications.

Email me at this address if my answer is selected or commented on:Email me if my answer is selected or commented on

Privacy: Your email address will only be used for sending these notifications.

9 votes

ANSWER

2 valence electrons

Explanation:

The electronic configuration is given below as

Looking at the configuration, you will see that the last energy carries 2 electrons

Hence, the valence electrons are 2

Snark answered Sep 2, 2023

by Snark

2.9k points

Email me at this address if a comment is added after mine:Email me if a comment is added after mine

Privacy: Your email address will only be used for sending these notifications.

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

1.6m questions

2.0m answers