CO_2 would be expected to be a polar molecule. a. True b. False What is the form

Question

CO_2 would be expected to be a polar molecule. a. True b. False What is the formal charge on nitrogen in NH_4? a. 0 b. 1 c. 2 d. 3 e. 4 Which would be expected to be the most electronegative? a. Cl b. Se c. Bi d. Cs The electronegativity difference between two atoms is 2.1. A bond between the two would be expected to be _____? a. nonpolar covalent b. polar covalent c. ionic Rank the following covalent bonds in order of increasing polarity: C-H, N-H, O-H, F-H. A) F-H, O-H, N-H, C-H B) O-H, F-H, N-H, C-H C) N-H, F-H, O-H, C-H D) C-H, N-H, O-H, F-H E) C-H, F-H, O-H, N-H Give the electron configuration, the noble-gas-core-abbreviated electron configuration, and whether it's diamagnetic or paramagnetic for an atom of arsenic in the ground-state.

Explanation / Answer

18)

CO2 is linear and there is no lone pair on C

O=C=O

this is non polar in nature

Answer: b.False

19)

Formal charge = [# of valence electrons] – [electrons in lone pairs + 1/2 the number of bonding electrons]

= 5 - (0 + 1/2 * 8)

= 5- (4)

= 1

Answer: b.1

I am allowed to answer only 1 question at a time

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