Question

using the periodic table to find the number of valence electrons of an atom
silicon (si) is an element that helps computers run. how many valence electrons does silicon have? write your answer as a number, not the word form of the number.

Explanation:

Step1: Find group of Silicon in periodic table

Silicon (Si) is in Group 14.

Step2: Determine valence electrons from group

For main-group elements, valence electrons = group number (1-2, 13-18: subtract 10 for 13-18). Group 14: 14-10=4.

Answer:

4