The compound sulfate (SO4^2-) has 32 valence electrons. This is calculated by adding the valence electrons of sulfur (6) to the valence electrons of oxygen (6 each for a total of 24), and then adding 2 additional electrons to account for the 2- charge of the sulfate ion.
Zinc has two valence electrons.
Aluminum has 3 valence electrons.
3 valence electrons
H2O2 is a compound, and the concept of "valence electrons" applies to atoms but not to compounds. If the question is or should be intended to be, "How many valence electrons did the atoms in one formula unit of H2O2 have before they reacted to form the compound?", the answer is one from each hydrogen atoms and six from each oxygen atom, for a total of 14.
electrons in Na2O
Six electrons must be transferred to form one formula unit of the compound Al2O3. Each aluminum atom donates three electrons, while each oxygen atom accepts two electrons.
There are 26 total valence electrons in the compound PCl3. Phosphorus contributes 5 valence electrons, while each chlorine atom contributes 7 electrons. This adds up to 5 + (3 x 7) = 26 valence electrons.
The compound sulfate (SO4^2-) has 32 valence electrons. This is calculated by adding the valence electrons of sulfur (6) to the valence electrons of oxygen (6 each for a total of 24), and then adding 2 additional electrons to account for the 2- charge of the sulfate ion.
4
Indium has 3 valence electrons.
8 valence electrons- 1s22s2p63s2p6
Zinc has two valence electrons.
Aluminum has 3 valence electrons.
5 valence electrons.
3 valence electrons
Beryllium has two valence electrons.