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:

Explanation:

Step1: Calculate valence - electrons for $CO$

Carbon has 4 valence electrons and oxygen has 6 valence electrons. So, $4 + 6=10$. The given $C = O$ structure has 10 valence electrons (2 lone - pairs on each atom and a double - bond), and both $C$ and $O$ satisfy the octet rule.

Step2: Calculate valence - electrons for $N_3^-$

Nitrogen has 5 valence electrons. For $N_3^-$, the total number of valence electrons should be $3\times5+1 = 16$ (the + 1 comes from the negative charge). The given structure has 14 valence electrons, so it has the wrong number of valence electrons.

Answer:

For the first structure ($C = O$):

• Yes.

For the second structure ($[:N - N = N:]^{-}$):

• No, it has the wrong number of valence electrons. The correct number is: 16