Question

The electron arrangement for Na would be:

shell 1: 2 electrons shell 2: 8 electrons shell 3: 1 electron

A) TRUE
B) FALSE

Answer 1

The electron arrangement for Na is: 2 electrons in shell 1, 8 electrons in shell 2, and 1 electron in shell 3.

Step-by-step explanation:

The electron arrangement for Na is:

• Shell 1: 2 electrons
• Shell 2: 8 electrons
• Shell 3: 1 electron

This gives us a total of 11 electrons. The electronic configuration of Na is 1s²2s²2p&sup6;3s¹. The electrons occupying the outermost shell orbital(s), which have the highest value of n, are called valence electrons. In the case of Na, there is 1 valence electron present in the 3s orbital.