A. Li, Be, Al and P
B. Na, P, O and Cl
C. B, C, N and O
D. Nz, Mg, S and Ar
Correct Answer:
Option C = B, C, N and O
No element in period 3 has Nz as its symbol
A. Li, Be, Al and P
B. Na, P, O and Cl
C. B, C, N and O
D. Nz, Mg, S and Ar
Correct Answer:
Option C = B, C, N and O
No element in period 3 has Nz as its symbol
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