Group 15

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1.
H3PO3 is dibasic because it has:
2.
H3PO2 acts as a strong reducing agent because of:
3.
The basicity of H3PO4 (orthophosphoric acid) is:
4.
The N-N bond in N2 (946 kJ/mol) is much stronger than the P-P bond in P4. This is because:
5.
NCl5 does not exist because:

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