Question

Out of these substances, pick one of these options (of what the substance is): Atom. formula units, or molecule

Pt:

Cu(NO₂)₂:

H₂O:

Be:

N₂O:

K₂CrO₄:

Answer 1

$H_{2} O$

It has two atoms of hydrogen linked by covalent bonds to the same atom of oxygen.

$6.022×10^{23} molecules.$