proposed lewis structure is the proposed lewis structure reasonable? yes. no, it has the wrong number of…

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\

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\

Answer

Explanation:

Step1: Calculate valence electrons for (H_2C_2)

  • Hydrogen ((H)) has (1) valence electron.
  • Carbon ((C)) has (4) valence electrons.
  • Total valence electrons (= 2\times1+2\times4 = 10).
  • In the proposed structure, there are (2) single bonds ((2) electrons each) and (4) lone pairs ((2) electrons each). Total electrons (= 2\times2 + 4\times2= 12). So, it has the wrong number of valence electrons.

Step2: Calculate valence electrons for ([OH]^{-})

  • Hydrogen ((H)) has (1) valence electron.
  • Oxygen ((O)) has (6) valence electrons.
  • There is a negative charge ((1) extra electron).
  • Total valence electrons (=1 + 6+ 1=8).
  • In the proposed structure, there is (1) single bond ((2) electrons) and (3) lone pairs ((2) electrons each). Total electrons (=2+3\times2 = 8).
  • Check octet rule: (O) has (8) electrons ( (2) in bond and (6) in lone pairs), (H) has (2) electrons. So, it is reasonable.

Step3: Calculate valence electrons for (H_2CO)

  • Hydrogen ((H)) has (1) valence electron.
  • Carbon ((C)) has (4) valence electrons.
  • Oxygen ((O)) has (6) valence electrons.
  • Total valence electrons (=2\times1+4 + 6=12).
  • In the proposed structure, there are (2) single bonds ((2) electrons each), (1) double bond ((4) electrons) and (2) lone pairs ((2) electrons each). Total electrons (=2\times2+4+2\times2 = 12).
  • Check octet rule: (C) has (8) electrons ((4) in bonds), (O) has (8) electrons ((4) in bond and (4) in lone pairs), (H) has (2) electrons. So, it is reasonable.

Answer:

  1. No, it has the wrong number of valence electrons. The correct number is: (10)
  2. Yes.
  3. Yes.