Given below are two statements: 
Assertion (A):

Second-period elements do not exhibit the excitation of electrons.

Reason (R): Second-period elements do not have vacant d-orbitals.
 
1. Both (A) and (R) are True and (R) is the correct explanation of (A).
2. Both (A) and (R) are True but (R) is not the correct explanation of (A).
3. (A) is True but (R) is False.
4. (A) is False but (R) is True.
Subtopic:  Types of Chemical Bond |
From NCERT
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Which of the following contains ionic, covalent, and coordinate bonds? 

1. \(NaCN \)
2. \(PH_4Cl \)
3. \(CH_3COONa \)
4. \(N_3H \)
Subtopic:  Types of Chemical Bond |
From NCERT
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