Question

What is the valence for CuO, PbO2, PH3, NO2, Cu2O, Ca3(PO4)2, MnSO4, Al(NO3)3, N2O5, Zn(OH)2?

A. 2, 4, 3, 3, 1, 2, 2, 3, 5, 2
B. 1, 2, 3, 4, 2, 3, 2, 3, 5, 2
C. 2, 4, 1, 3, 2, 3, 2, 3, 5, 2
D. 2, 2, 3, 1, 3, 2, 2, 4, 5, 3

Answer 1

The valence for CuO is 2, PbO2 is 4, PH3 is 3, NO2 is 3, Cu2O is 1, Ca3(PO4)2 is 2, MnSO4 is 2, Al(NO3)3 is 3, N2O5 is 5, and Zn(OH)2 is 2.

Step-by-step explanation:

Valence refers to the number of valence electrons an atom has, which is the outermost shell of electrons. The valence for each compound mentioned is as follows:

• CuO: 2
• PbO2: 4
• PH3: 3
• NO2: 3
• Cu2O: 1
• Ca3(PO4)2: 2
• MnSO4: 2
• Al(NO3)3: 3
• N2O5: 5
• Zn(OH)2: 2