Short answer: 4
Explanation:
So to do this you have to look at the problem backwards, so 28 divided by 2, 14 - x = 10 If 10 + x = 14 the x = 4
Metals are found in group 1, 2, and abit of 3.
Non-metals are found in group 0/8, abit in 4, 5, 6 and 7 too. Here is a picture. Most of the periodic table are metals.
Answer: well Mr hoppie seems like a good person
Explanation: HES GETTING PIZZAAAAAAAAA