VSEPR and Molecular Geometry

Question 1

Which element is the most electronegative?

Accepted Answer

F

Question 2

Which of the following elements are an exception to the octet rule (having 8 electrons)? Choose all that apply.

Accepted Answer

B, Al, H

Question 3

What is the trend for electronegativity as you go across a period?

Accepted Answer

It increases

Question 4

Write the formula for disulfur decafluoride.

Accepted Answer

S2F10

Question 5

A lone pair is defined as ___________.

Accepted Answer

A pair of non-bonding electrons.

Question 6

What extra steps must be taken when drawing the Lewis structure for the following ion [NH4]+? Choose all that apply.

Accepted Answer

You must SUBTRACT an electron due to the (+) charge., You must put brackets around the final answer.

Question 7

Name the following compound: CO2

Accepted Answer

carbon dioxide

Question 8

Which type of molecular shape is shown by this molecule?

Accepted Answer

trigonal planar

Question 9

What type of bond would be formed with a difference of 0.3?

Accepted Answer

Non-polar covalent

Question 10

Which of the following molecular shapes would have a bond angle of 180 degrees?

Accepted Answer

Linear

Question 11

Diatomic elements (O2,H2) are defined as identical atoms that bond with each other.What type of bond will they form?

Accepted Answer

Non-polar covalent

Question 12

What is VSEPR Theory used to predict?

Accepted Answer

Molecular shape

Question 13

Give the chemical name for the following compound: H2O

Accepted Answer

dihydrogen monoxide

Question 14

What do we call a covalent bond where electrons are shared UNEQUALLY (unevenly)?

Accepted Answer

Polar covalent

Question 15

VSEPR stand for _______________,

Accepted Answer

Valence Shell Electron Pair Repulsion

Question 16

Name the following compound: CCl4

Accepted Answer

carbon tetrachloide

Question 17

How many electrons are represented by a single straight line in a Lewis structure?

Accepted Answer

2

Question 18

What two types of atoms make a covalent bond?

Accepted Answer

2 non-metals

Question 19

The number of total, shared, and unshared pairs of electrons in this molecule is __________.

Accepted Answer

4,3,1

Question 20

These materials are all solids and are good conductors of electricity. IONIC or COVALENT?

Accepted Answer

Ionic

Question 21

This molecule has how many lone pairs around the central atom?

Accepted Answer

0

Question 22

Electronegativity is a measurement of the ability of a nucleus to _________________.

Accepted Answer

attract bonding electrons.

Question 23

What kind of bond will be formed with an electronegativity difference of 2.0?

Accepted Answer

Ionic

Question 24

Name the following compound: N2O4

Accepted Answer

dinitrogen tetroxide

Question 25

The final SHAPE of this NH3 molecule is _________.

Accepted Answer

trigonal pyramidal

Question 26

The polarity of a bond (whether it's non-polar covalent, polar covalent, or ionic) is determined by _________.

Accepted Answer

The DIFFERENCE in the electronegativities of the two atoms.

Question 27

Write the formula for dinitrogen pentoxide.

Accepted Answer

N2O5

Question 28

Order the types of bonds based on the charge of their molecules. (Lowest charge to greatest)

Accepted Answer

Non-polar covalent-->Polar covalent-->Ionic

Question 29

A material with a high melting point. IONIC or COVALENT?

Accepted Answer

Ionic

Question 30

Examples include compounds that can be solids, liquids, or gases. IONIC or COVALENT?

Accepted Answer

Covalent

Question 31

How do covalent bonds form?

Accepted Answer

Sharing valence electrons between atoms.

Question 32

What is the VSEPR shape of H2S?

Accepted Answer

Bent

VSEPR and Molecular Geometry

Questions 32

VSEPR and Molecular Geometry

Questions 32