Question

decide whether these proposed lewis structures are reasonable.
proposed lewis structure is the proposed lewis structure reasonable?
yes.
no, it has the wrong number of valence electrons.
the correct number is:
no, it has the right number of valence electrons but doesnt satisfy the octet rule.
the symbols of the problem atoms are: *
yes.
no, it has the wrong number of valence electrons.
the correct number is:
no, it has the right number of valence electrons but doesnt satisfy the octet rule.
the symbols of the problem atoms are: *
yes.
no, it has the wrong number of valence electrons.
the correct number is:
no, it has the right number of valence electrons but doesnt satisfy the octet rule.
the symbols of the problem atoms are: *

• if two or more atoms of the - same element dont satisfy the octet rule, just enter the chemical symbol as many times as necessary. for example, if two oxygen atoms dont satisfy the octet rule, enter o,o.

Explanation:

Step1: Determine valence - electrons of Cl and O

Chlorine (Cl) has 7 valence electrons and oxygen (O) has 6 valence electrons. The ion has a - 1 charge, so we add 1 electron. For the Cl - O structure: $7 + 6+1=14$ valence electrons. For the Cl = O structure: also $7 + 6+1 = 14$ valence electrons. For the N - N = N structure, nitrogen (N) has 5 valence electrons, and with a - 1 charge, the total number of valence electrons is $5\times3 + 1=16$ valence electrons.

Step2: Check octet - rule for Cl - O structures

In the $[\ddot{Cl}-\ddot{O}:]^{-}$ structure, Cl has 8 electrons (3 lone - pairs and 1 bond) and O has 8 electrons (3 lone - pairs and 1 bond), so it satisfies the octet rule. In the $[\ddot{Cl}=\ddot{O}:]^{-}$ structure, Cl has 10 electrons (2 lone - pairs and 2 bonds), which violates the octet rule.

Step3: Check octet - rule for N - N = N structure

The central N has 8 electrons (1 lone - pair and 3 bonds), the left N has 8 electrons (3 lone - pairs and 1 bond), and the right N has 8 electrons (2 lone - pairs and 2 bonds), so it satisfies the octet rule.

Answer:

1. No, it has the right number of valence electrons but doesn't satisfy the octet rule. The symbols of the problem atoms are: Cl
2. Yes
3. Yes