Unit 2 Midterm Review

How many lithium atoms are needed to correctly balance nitrogen to form a neutral salt?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-5

Which of the following is the correct name for S₂Cl₃

• Disulfur trichloride

• trichlorine disulfide

• trisulfur dichlorde

• sulfur trichloride

Rank the bonds
H-F, B-N, N-O, Be-H, C-F
From least to greatest difference in electronegativity (EN)

• Be-H < B-N < N-O < C-F < H-F

• Be-H < N-O < B-N < H-F < C-F

• N-O < Be-H < B-N < H-F < C-F

• N-O < Be-H < B-N < C-F < H-F

Tags

NGSS.HS-PS1-1

Which of the following has the lowest lattice energy?

• NaCl

• LiF

• MgBr₂

• CaS

Tags

NGSS.HS-PS1-3

NGSS.HS-PS2-4

Which of the following salts has an incorrect structure

• CaCl₂

• MgCl

• LIF

• CaO

Tags

NGSS.HS-PS1-3

Which of the following compounds does not have unpaired electrons on the central atom?

• PI₃

• H₂S

• CCl₄

• NI₃

Tags

NGSS.HS-PS1-2

Draw the lewis structure for C₂H₂. How many bonds exist between the two carbons?

• 1

• 2

• 3

• 4

Which of the following compounds does not exhibit resonance?

• CO₂

• O₃

• PO₄^-3

• NO₃^-

Which of the following compounds is a radical?

• NF₃

• CF₃

• O₃

• BI₃

What is the number of electrons around the central atom XeF₂?

• 12

• 4

• 8

• 10