No of atoms = 6Ca + 4(1P + 4O)] = 6 atoms + 4x5 atoms = 6 atoms + 20 atoms
= 26 atoms
To get radius, divide the diameter into 2. 3.6÷2 = 1.8 cm
Iconic compound consists of equal number of positive and negative ions so the charge of icon compound is zero.
Good luck and please can I have brainless because this is a new account and my other one had like 10
Your answer would be B: "Matter is made up of atoms"
