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: Locate Si on periodic table

Silicon (Si) is in Group 14 (IVA).

Step2: Group number = valence electrons

For main group elements, group number (1-2, 13-18) equals valence electron count. Group 14 means 4 valence electrons.

Answer:

4