Plsss mee 100 ! how many atoms of each element does magnesium hydroxide, mg(oh)2, contain? magnesium = 1 atom, oxygen = 2 atoms, hydrogen = 2 atoms magnesium = 2 atom, oxygen = 2 atoms, hydrogen = 2 atoms magnesium = 1 atom, oxygen = 1 atoms, hydrogen = 2 atoms magnesium = 2 atom, oxygen = 1 atoms, hydrogen = 2 atoms

It would be Magnesium = 1 atom, Oxygen = 2 atoms, Hydrogen = 2 atoms. It has 5 atoms total. There is 1 magnesium and you multiply each element by the the 2 outside the parenthesis to get 2 oxygen and 2 hydrogen.

how many atoms Mg(OH)2 contains? choices are:

Magnesium = 1 atom, Oxygen = 2 atoms, Hydrogen = 2 atoms

Magnesium = 2 atom, Oxygen = 2 atoms, Hydrogen = 2 atoms

Magnesium = 1 atom, Oxygen = 1 atoms, Hydrogen = 2 atoms

Magnesium = 2 atom, Oxygen = 1 atoms, Hydrogen = 2 atoms

look at Mg(OH)2, there should be 1x Mg, 2x O n 2x H

so ans is A.  Magnesium = 1 atom, Oxygen = 2 atoms, Hydrogen = 2 atoms