Question

decide whether these proposed lewis structures are reasonable. proposed lewis structure is the proposed lewis structure reasonable? :c≡o: 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: h - h - o - h+ 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: :o - c - o: 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: Calculate valence - electrons of CO

Carbon has 4 valence electrons and oxygen has 6 valence electrons. So the total number of valence electrons for CO is \(4 + 6=10\). In the structure :C≡O:, there are 10 valence electrons (3 bonding pairs and 2 lone - pairs). Also, both C and O satisfy the octet rule.

Step2: Calculate valence - electrons of \(H_3O^+\)

Hydrogen has 1 valence electron and oxygen has 6 valence electrons. For \(H_3O\), the total number of valence electrons is \(3\times1 + 6=9\). But since it is a \(H_3O^+\) ion, we subtract 1 electron, so the correct number of valence electrons is \(9 - 1 = 8\). In the structure \([H - H - \ddot{O}-H]^+\), there are 8 valence electrons (3 bonding pairs and 1 lone - pair on O), and all atoms satisfy the octet/duet rule (H has a duet and O has an octet).

Step3: Calculate valence - electrons of \(CO_2\)

Carbon has 4 valence electrons and each oxygen has 6 valence electrons. So the total number of valence electrons for \(CO_2\) is \(4+2\times6 = 16\). In the structure :\(\ddot{O}-C-\ddot{O}:\), there are 16 valence electrons (2 bonding pairs and 4 lone - pairs on each O), and all atoms satisfy the octet rule.

Answer:

1. Yes.
2. Yes.
3. Yes.