Unit 5 Exam

Question 1

Which of the following groupings contains only representative elements:
     A) Cu, Co, Cd
     B) Al, Mg, Li
     C) Fe, Na, Pb
     D) Ne, Kr, Ti

Answer 1

B) Al, Mg, Li

Question 2

What is true about the electron configurations of the representative elements?:
A) s and p sublevels filled or filling
B) s, p, and d sublevels filling
C) s, p, d and f sublevels filling
D) Filled d sublevel

Answer 2

A) s and p sublevels filled or filling

Question 3

The metals in Groups 1A, 2A, and 3A _____ electrons when forming ions:

Answer 3

lose

Question 4

Which of the following elements has the smallest radius:
     •Na
     •Rb
     •Al
     •F

Answer 4

F

Question 5

How does the size of an ion compare to the atom it came from?:

Answer 5

Anions are larger than their neutral atom

Question 6

The modern periodic table is arranged according to ___________:

Answer 6

Atomic number & groups having similar chemical properties

Question 7

In which of the following groups of ions are the charges all shown correctly:
A) Li^1-, O^2-, S^2+
B) Ca^2+, Al^3+, Br^1-
C) K^1+, P^3-, F^1+

Answer 7

B) Ca^2+, Al^3+, Br^1-

Question 8

Which of the following elements is a nonmetal:
     •Fe
     •Ga
     •C
     •Hg

Answer 8

C

Question 9

What is another name for the transition metals?:

Answer 9

Group B elements

Question 10

Which of the following elements is a transition metal?:
     •Copper
     •Cesium
     •Iodine
     •Aluminium

Answer 10

Copper

Question 11

What is the factor that contributes to the increase in ionization energy from left to right across a period?:

Answer 11

Increase in nuclear charge

Question 12

To what category of elements does an element belong if it is a poor conductor of electricity?:

Answer 12

nonmetal

Question 13

What is the charge of a cation?:

Answer 13

positive

Question 14

Which of these elements has the lowest electronegativity value?:
     • Al
     • Mg
     • K
     • Cs

Answer 14

Cs

Question 15

What element in the second period has the largest atomic radius?:

Answer 15

Li

Question 16

Which of the following elements is in the same period as phosphorus?:
     • Nitrogen 
     • Antimony
     • Krypton
     • Argon

Answer 16

Argon

Question 17

Who arranged the elements according to atomic mass, and used the arrangement to predict the properties of missing elements?:

Answer 17

Mendeleev

Question 18

For Group 2A metals, which electron is the most difficult to remove?:

Answer 18

The third

Question 19

What is the element with the highest electronegativity value?:

Answer 19

Fluorine

Question 20

Which subatomic particle plays the greatest part in determining the properties of an element?:

Answer 20

electron

Question 21

Of the following, which one has the smallest first ionization energy:
     •Pb
     •Ge
     •Se
     •Br

Answer 21

Pb

Question 22

In which of the following sets are the charges given correctly for all the ions:
A) Na^1+, Mg^1+, Al^1+
B) K^1+, Sr^2+, O^2-
C) B^3+, O^2-, Kr^2+

Answer 22

B) K^1+, Sr^2+, O^2-

Question 23

Which of the following elements has the smallest ionic radius:
     • Na
     • Mg
     • K
     • Ca

Answer 23

Mg

Question 24

How does atomic radius change from left to right across a period in the periodic table?:

Answer 24

it decreases

Question 25

How does atomic radius change from top to bottom in a group in the periodic table?:

Answer 25

it increases

Question 26

As you move from left to right across the second period of the periodic table, ionization energy ______:

Answer 26

increases

Question 27

``` Which of the following is a representative element: • Fe • Mn • Mg • Ag ```

Answer 27

Mg

Question 28

Cations form when an atom _____ electrons:

Answer 28

loses

Question 29

What is the energy required to remove an electron from an atom in the gaseous state called?:

Answer 29

ionization energy

Question 30

``` Which of the following decreases with increasing atomic number in Group 2A: • ionization energy • atomic size • ionic size • number of protons ```

Answer 30

ionization energy

Question 31

What is another name for the representative elements?:

Answer 31

Group A elements

Question 32

Each period in the periodic table corresponds to ______:

Answer 32

a horizontal row of elements

Question 33

``` Which of the following elements has the smallest first ionization energy: • Si • Ge • P • As ```

Answer 33

Ge

Question 34

How many electrons does the ion Ca^2+ contain?:

Answer 34

18

Question 35

How many electrons are there in the highest occupied energy level of atoms in Group 5A elements?:

Answer 35

5

Question 36

How many electrons are present in the d sublevel of a neutral atom of copper?:

Answer 36

10

Question 37

How many electrons are in a rubidium ion, Rb^1+?:

Answer 37

36

Question 38

What is the usual charge on an ion from Group 7A?:

Answer 38

1-