How many atoms are in 10 Mg(OH)2?

In a formula unit of mg (OH)2, there are one magnesium ion and two hydroxide ions, or one magnesium, two oxygen, and two hydrogen atoms

the number of protons in the nucleus of a given element. has slight luster and conducts electricity at high temperatures like metal.but like a nonmetal,boron is brittle and does not conduct electricity well at low temperatures. in graphite, carbon is a soft,brittle solid.it is reflective,ductile,or malleable.