How many atoms does 2H2O have in each element, second 2 is a subscript

6 atoms total; 4 H^+ atoms, 2 O^2- atoms

Explanation:

2(H2O)

2 * 2H atoms = 4 H atoms

2 * 1 O atom = 2 O atoms

4+2 = 6 total

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.

plasma - state of matter made up of electrically charged particles