Question 12 (5 points) What is the electron group (EG) and molecular geometry (M

Question

Question 12 (5 points)

What is the electron group (EG) and molecular geometry (MG) of an ammonia molecule?

Question 12 options:

(EG) tetrahedral and (MG) trigonal pyramidal

(EG) tetrahedral and (MG) bent

(EG) tetrahedral and (MG) tetrahedral

Question 13 (5 points)

According to the octet rule, a bromine atom has a tendency to

Question 13 options:

lose one electron.

lose two electrons.

gain one electron.

Question 14 (5 points)

Consider the molecule NH3. What are the bond angles in the structure?

Question 14 options:

109.5°

104.5°

107°

Question 15 (5 points)

What is the molecular shape and polarity for xenon tetrafluoride?

Question 15 options:

square-planar and polar

tetrahedral and non-polar

square-planar and non-polar

Question 16 (5 points)

Which of the following compounds is capable of covalent bonding?

Question 16 options:

K2SO4

NaCl

NF3

Question 17 (5 points)

Based off molecular polarity determined by VSEPR theory, which of the following would be soluble in methanol?

Question 17 options:

heptane

pentane

ethanol

Question 18 (5 points)

According to the octet rule, a magnesium atom has a tendency to

Question 18 options:

lose one electron.

lose two electrons.

gain one electron.

Question 19 (5 points)

According to the octet rule, which of elements will have a tendency to loss 2 electrons?

Question 19 options:

oxygen

cesium

strontium

Question 20 (5 points)

In a C-Br bond, the carbon has a partial negative charge.

Question 20 options:

(EG) tetrahedral and (MG) trigonal pyramidal

(EG) tetrahedral and (MG) bent

(EG) tetrahedral and (MG) tetrahedral

Explanation / Answer

Q12

What is the electron group (EG) and molecular geometry (MG) of an ammonia molecule?

(EG) tetrahedral and (MG) trigonal pyramidal

Q13

According to the octet rule, a bromine atom has a tendency to

gain one electron.

Q14

Consider the molecule NH3. What are the bond angles in the structure?

The angle is about 107°C due to polarit of electron lone pairs vs. H

Q15

What is the molecular shape and polarity for xenon tetrafluoride?

square-planar and non-polar

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