Chapter 5

Question 1

Energy required to remove a valence electron from an atom

Answer 1

Ionization energy

Question 2

Electrons in the highest energy level

Answer 2

Valence electrons

Question 3

When elements are arranged in order of increasing atomic number, their physical and chemical properties show a repeating pattern

Answer 3

The periodic law

Question 4

Atomic radius trends
Across–
Down–

Answer 4

Across– decreases

Down– increases

Question 5

Ionization energy trends
Across–
Down–

Answer 5

Across– increases

Down– decreases

Question 6

Group IA

Low densities, low melting points, soft enough to be cut by a knife, very reactive

Answer 6

Alkali metals

Question 7

Group VIIA

Highly reactive, react with metals and non metals, low density

Answer 7

Halogens

Question 8

Group VIIIA

Least reactive elements

Answer 8

Noble gases

Question 9

Group IIA

High density, high melting points

Answer 9

Alkaline earth metals

Question 10

Group 3-12

High density, high melting points, good conductors

Answer 10

Transition metals

Question 11

Bottom elements

Many are radioactive

Answer 11

Inner transition metals

Question 12

What is the largest naturally occurring element?

Answer 12

Uranium

Question 13

How are larger elements formed?

Answer 13

Man-made, not natural

Question 14

The __________ metals have a single electron in the highest energy level.

Answer 14

Alkali

Question 15

The __________ achieve electron configurations of noble gases by losing 2 electrons.

Answer 15

Alkaline earth metals

Question 16

The ____________ vary in the number of electrons in the highest energy level.

Answer 16

Transition metals

Question 17

The __________ achieve the electron configurations of noble gases by gaining 1 electron.

Answer 17

Halogens

Question 18

The ___________ have full s and p orbitals in the highest energy level.

Answer 18

Noble gases

Question 19

The ___________ are stable and unreactive.

Answer 19

Noble gases

Question 20

The ___________ are highly reactive and readily form salts with metals.

Answer 20

Halogens

Question 21

The ___________ are metals that are more reactive than the transition elements but less reactive than the alkali metals.

Answer 21

Alkaline earth metals

Question 22

Found by taking 1/2 of the distance between the nuclei of 2 bonded atoms

Answer 22

Atomic radius