Onramps Chemistry Unit 2 review

Front

Rank the labeled bonds in the molecule below from least to most polar in terms of difference in electronegativity.

Back

d < c < e < a < b

Front

What is the formal charge on the nitrogen atom in ammonia?

Back

0

Front

Which compound does not have unpaired electrons on the central atom? Options: NH₃, H₂O, CH₄, PH₃.

Back

CH₄

Front

What is the correct Lewis structure of ethynol (C₂H₂O)?

Back

H – C ≡ C – O – H

Front

Which of the following compounds does not exhibit resonance? CH₄, O₃, NO₃⁻, CO₃²⁻

Back

CH₄

Front

Which of the following molecular geometries is not associated with an expanded valence? Options: Trigonal pyramidal, Seesaw, Linear, Octahedral

Back

Trigonal pyramidal

Front

What is the number of electrons around the central atom in XeF₄?

Back

12

Front

In which of the following are the bond angles most distorted by unbonded electron pairs? NH₃, O₃, SCl₄, H₂O

Back

H₂O

Front

For which of the following compounds is the electronic geometry not the same as the molecular geometry? Options: BeCl₂, BH₃, CH₄, SF₄

Back

SF₄

Front

Which of the following compounds has a molecular geometry that is different from the others? BeCl₂, O₃, I₃⁻, CO₂

Back

O₃