Question 1

Which of these statements is correct?

Accepted Answer

A proton is a positively-charged particle in the nucleus.

Answer

Neutrons and protons are charged particles in the nucleus.

Answer

An electron is a negatively-charged particle in the nucleus.

Answer

A proton is a negatively-charged particle in the nucleus.

Question 2

The highest energy shell in an atom is the shell that

Accepted Answer

is farthest from the nucleus.

Answer

is closest to the nucleus.

Answer

has only "f" orbitals.

Answer

has the most electrons.

Question 3

An orbital may never be

Accepted Answer

occupied by more than two electrons

Answer

unoccupied

Answer

occupied by one electron

Answer

occupied by two  electrons

Question 4

What neutral atom has the electron configuration $ls^2 2s^2 2p^6  3s^2 3p^6  4s^1$ ?

Accepted Answer

K

Answer

Na

Answer

Ba

Answer

Ca

Question 5

What is the maximum number of electrons allowed in an orbital?

Accepted Answer

2

Answer

1

Answer

4

Answer

3

Question 6

The maximum number of  “f” orbitals in an energy level is

Accepted Answer

7

Answer

1

Answer

3

Answer

5

Question 7

As we proceed from left to right in a series of elements in the Periodic Table, we note an increase in the

Accepted Answer

tendency to gain electrons

Answer

number of electron shells

Answer

tendency to lose electrons

Answer

atomic radius

Question 8

Members in the same family have similar properties because they all

Accepted Answer

have identical number of valence electrons.

Answer

have the same number of energy levels

Answer

have the same atomic radius

Answer

possess the same number of electrons

Question 9

How many of the electrons shown here would be found in figure-8 or “hour glass” shaped orbitals?

Accepted Answer

14

Answer

10

Answer

2

Answer

4

Question 10

Why are the last two electrons shown in two different orbitals rather than being together in one orbital?

Accepted Answer

Hund's rule

Answer

Aufbau principle

Answer

Lewis dot rule

Answer

Pauli exclusion principle

Question 11

How many electrons are there in the “p’ orbitals of the outermost energy level of potassium, atomic number 19?

Accepted Answer

0

Answer

1

Answer

3

Answer

2

Question 12

Positive ions are formed from neutral atoms by the loss of

Accepted Answer

electrons

Answer

protons

Answer

nuclear charge

Answer

neutrons

Question 13

Which element’s typical atoms have three unpaired electrons in its highest energy orbitals?

Accepted Answer

P

Answer

Sr

Answer

Li

Answer

Al

Question 14

The Lewis dot diagram for an atom of sulfur will include _____ dots.

Accepted Answer

6

Answer

8

Answer

2

Answer

4

Question 15

The elements in the periodic table are arranged

Accepted Answer

in order of increasing atomic number.

Answer

in order of increasing atomic mass.

Answer

with all the gases first, followed by the solids.

Answer

according to the volume of the atoms.

Question 16

Compared to the alkali metals, the alkaline earth metals have

Accepted Answer

higher ionization energies and higher electronegativities

Answer

lower ionization energies but higher electronegativities

Answer

higher ionization energies but lower electronegativities

Answer

lower ionization energies and lower electronegativities

Question 17

In which group of the periodic table would this element be found?

Accepted Answer

alkali metals

Answer

halogens

Answer

transition metals

Answer

noble gases

Question 18

Which element does this orbital diagram represent?

Accepted Answer

potassium

Answer

argon

Answer

calcium

Answer

sodium

Question 19

How many electron orbitals does this element have?

Accepted Answer

10

Answer

19

Answer

6

Answer

4

Question 20

How many energy levels does this element have?

Accepted Answer

4

Answer

10

Answer

19

Answer

6

Question 21

The sodium found in this salt does have 11 protons … but how many electrons does it have?

Accepted Answer

10

Answer

11

Answer

1

Answer

18

Question 22

Salt contains chloride ions, too … which noble gas would these chloride ions resemble?

Accepted Answer

argon

Answer

neon

Answer

krypton

Answer

chlorine

Question 23

The electron configuration of scandium is  $ls^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^1 $.   This shows that

Accepted Answer

the 4s electrons are at a lower energy level than the 3d electrons

Answer

a new electron shell begins with the d orbital

Answer

three d orbitals are present

Answer

the common oxidation number of scandium is +1

Question 24

The number of electrons in the highest energy level of an argon atom is

Accepted Answer

8

Answer

2

Answer

10

Answer

18

Question 25

All the gaseous elements at room temperature are

Accepted Answer

non-metals

Answer

good conductors of electricity

Answer

metals

Answer

good conductors of heat

Question 26

Which element has an atom in the ground state with the most loosely bound electron?

Accepted Answer

Cs

Answer

As

Answer

Xe

Answer

F

Question 27

Which of the following statements is false?

Accepted Answer

It is easier for an atom to form a +2 ion than a +1 ion.

Answer

In a row of elements, the metals have the lowest ionization energies.

Answer

Reaching a noble gas configuration increases ionization energy.

Answer

In a family of elements, the largest atom has the lowest ionization energy.

Question 28

In the modern periodic table, the elements are arranged according to

Accepted Answer

electron structure

Answer

symbols

Answer

names

Answer

the order in which they were discovered

Question 29

In which section of the periodic table are the most electronegative elements found?

Accepted Answer

upper right

Answer

lower right

Answer

lower left

Answer

upper left

Question 30

The properties of elements are periodic functions of their

Accepted Answer

atomic number

Answer

oxidation number (charge)

Answer

atomic radius

Answer

atomic mass

Question 31

In which group of the periodic table would this element be found?

Accepted Answer

transition metals

Answer

noble gases

Answer

alkali metals

Answer

halogens

Question 32

How many valence electrons does this atom contain?

Accepted Answer

2

Answer

0

Answer

9

Answer

1

Question 33

Which of the following is the correct order for electrons filling in orbitals?

Accepted Answer

3s, 3p, 4s, 3d

Answer

1s, 2s, 2p, 2d

Answer

2p, 3s, 3p, 3d

Answer

3p, 4s, 3d, 5s

Question 34

How many valence electron dots will the Lewis dot diagram for element X have if its electron configuration is $1s^2 2s^2 2p^3$ ?

Accepted Answer

5

Answer

1

Answer

3

Answer

2

Question 35

Helium, neon, argon and krypton are in the same family of elements. This means that they

Accepted Answer

have similar chemical properties

Answer

have the same melting and boiling points

Answer

were discovered by the same person

Answer

can be decomposed into similar substances

Question 36

The elements of the Noble Gas Family, except helium, have an outer shell of ____ electrons.

Accepted Answer

8

Answer

32

Answer

18

Answer

2

Question 37

A vertical column of elements in the Periodic Table is known as

Accepted Answer

a group

Answer

a period

Answer

an octave

Answer

a series

Question 38

Within a group, ionization energy tends to decrease with increasing atomic number. This is due partially to the

Accepted Answer

outer electrons being farther from the nucleus

Answer

outer electrons being closer to the nucleus

Answer

increasing forces of attraction

Answer

decreasing size of the atom itself

Question 39

Which group (family) of the Periodic Table has the elements with lowest first ionization energies?

Accepted Answer

IA (alkali metals)

Answer

IIA (alkaline earths)

Answer

VA (nitrogen family)

Answer

VIIIA (noble gases)

Question 40

The chemical activity of an atom is most closely related to the number and arrangement of its

Accepted Answer

electrons

Answer

protons

Answer

isotopes

Answer

neutrons

Question 41

Which atom has 3 energy levels with only 4 electrons in the last energy level?

Accepted Answer

Si

Answer

Al

Answer

Ga

Answer

Ge

Question 42

Which atom has 4 energy levels with only 3 electrons in the last energy level?

Accepted Answer

Ga

Answer

Ge

Answer

Al

Answer

Si

Question 43

The element with an atomic number 12 has a simple ionic charge of

Accepted Answer

+2

Answer

0

Answer

+1

Answer

-2

Question 44

The most electronegative element in the alkali metals family is

Accepted Answer

Li

Answer

Cs

Answer

Ca

Answer

Na

Question 45

Of the following, the pair that contains two metals most similar to each other in chemical activity is

Accepted Answer

Ca & Mg

Answer

Al & Ag

Answer

Cu & Fe

Answer

Al & K

Question 46

Members of the lithium family get a stable electron structure by

Accepted Answer

losing one “s” electron

Answer

completing a "p" orbital

Answer

completing a "s" orbital

Answer

losing one “p” electron

Question 47

Which of these orbital diagrams is drawn correctly?

Accepted Answer

B

Answer

C

Answer

A

Answer

D

Question 48

Which scientist led the team that developed the system of organizing electrons shown here?

Accepted Answer

Schrodinger

Answer

Aufbau

Answer

Bohr

Answer

Einstein

Question 49

How many electrons can be found in any one of the orbitals shown here?

Accepted Answer

2

Answer

6

Answer

14

Answer

10

Question 50

The orbitals shown in green would be found for the first time in which energy level?

Accepted Answer

4

Answer

3

Answer

5

Answer

2

Question 51

If they were completely filled, how many electrons would be found in the blue orbitals?

Accepted Answer

10

Answer

2

Answer

5

Answer

14

Question 52

Which element has the electron configuration $ls^2 2s^2 2p^6 3s^2 3p^6 4s^1$?

Accepted Answer

potassium

Answer

sodium

Answer

copper

Answer

zinc

Question 53

Lewis dot diagrams illustrating the structure of atoms usually show

Accepted Answer

the electrons in the outermost energy level

Answer

the total number of neutrons

Answer

the total number of protons

Answer

the total number of electrons

Question 54

Which sublevel becomes filled when a chloride anion, Cl 1-, is formed?

Accepted Answer

3p

Answer

4p

Answer

2p

Answer

3s

Question 55

In a water molecule, what type of bond is formed?

Accepted Answer

Polar covalent

Answer

Octet

Answer

Ionic

Answer

Metallic

Question 56

Which element in the water molecule achieves an octet?

Accepted Answer

oxygen

Answer

both oxygen and hydrogen

Answer

hydrogen

Answer

neither oxygen nor hydrogen

Question 57

What do the dots at the top of this diagram represent?

Accepted Answer

unshared electrons pairs

Answer

cations

Answer

shared electron pairs

Answer

anions

Question 58

What type of bond is represented in this Lewis structure?

Accepted Answer

ionic

Answer

covalent

Answer

metallic

Answer

Aufbau

Question 59

In this compound, which element is the cation?

Accepted Answer

sodium

Answer

both sodium & chloride

Answer

chloride

Answer

chlorine

Question 60

In this compound, which ion will resemble the electron configuration of neon?

Accepted Answer

sodium

Answer

chloride

Answer

both sodium and chloride

Answer

neither sodium nor chloride

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