LT 1.4

Question 1

What is the shape of a molecule with 4 bonds and no lone pairs around the central atom?

Answer 1

TETRAHEDRAL

Question 2

Which pair of atoms will form covalent bonds?

Answer 2

S and Cl

Question 3

Which pair has the correct name and formula of covalent compounds?

Answer 3

disulfur decafluoride, S2F10

Question 4

Which molecule will be linear?

Answer 4

HF

Question 5

What is the name of the compound CCl4?

Answer 5

carbon tetrachloride

Question 6

Which one of the following compounds contains a polar covalent bond?

Answer 6

carbon dioxide

Question 7

In the compound PCl5, which prefix is used to indicate the number of Cl atoms?

Answer 7

PENTA

Question 8

Which pair of atoms would form triple bonds?

Answer 8

Br and Br

Question 9

Which of the following properties is typically associated with metals due to metallic bonding?

Answer 9

High electrical conductivity

Question 10

What is malleability?

Answer 10

the property of metals being hammered into thin sheets

Question 11

Which group will NOT form covalent bonds with group VIA?

Answer 11

Group IIIA

Question 12

Which of the following properties is TRUE about ionic compounds?

Answer 12

Have high melting points

Question 13

Which of the following sets of elements is arranged in order of DECREASING electronegativity?

Answer 13

Cl, S, Se

Question 14

What is the formula of the compound dichlorine heptoxide?

Answer 14

Cl2O7

Question 15

Which of the following compounds exhibits covalent properties?

Answer 15

H2O2 (hydrogen peroxide)

Question 16

Which of the following describes a polar bond?

Answer 16

There is unequal sharing of electrons

Question 17

What is the name of the compound N2O4?

Answer 17

dinitrogen tetroxide

Question 18

Which statement is correct about TWO elements whose atoms form a covalent bond with each other?

Answer 18

The elements are non-metals.

Question 19

Which one of the following pairs of atoms would form a non-polar covalent bond?

Answer 19

Cl and Cl

Question 20

The following materials shows property of malleability EXCEPT:
iron
graphite
gold
silver

Answer 20

GRAPHITE

Question 21

THE MORE POLAR, THE MORE LIKELY IT IS TO BECOME __

Answer 21

IONIC BOND

Question 22

Given the Lewis electron-dot diagram, what do the lines represent?

Answer 22

The carbon and hydrogen valence electrons

Question 23

Which statement is TRUE for compounds containing only covalent bonds?

Answer 23

They are made up of non-metallic elements only.

Question 24

Which pair of elements will have the largest electronegativity difference? Refer to the periodic table below for the electronegativity values.

Answer 24

oxygen and hydrogen

Question 25

What is the name of compound NO3?

Answer 25

nitrogen trioxide

Question 26

This refers to the ability of metals to be drawn into thin wire.

Answer 26

ductility

Question 27

Which of the following statements contrasting covalent bond and ionic bond is CORRECT?

Answer 27

Covalent bonds usually involve two nonmetals and ionic bonds usually involve a metal and nonmetal.

Question 27

Which of the following compounds exhibits ionic properties?

Answer 27

NaCl (sodium chloride)

Question 27

Based on the electronegativities: K= 0.8, H=2.1, Br = 2.8, which of the following statements is TRUE?

Answer 27

H2 is nonpolar covalent molecule and HBr is a polar covalent molecule.