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Periodic Trends (15 min)

Total questions: 30

Worksheet time: 16mins

Name
Class
Date
1.
The tendency of an atom to attract electrons is called...
a)
ionization energy
b)
electronegativity
c)
atomic radius
d)
ionic radius
2.
Ionization energy is the amount of energy required to remove the electron that is closest to the nucleus.
a)
True
b)
False
3.

The octet rule states that an atom will gain or lose electrons in order to have a full valence shell (usually 8).

a)

True

b)

False

4.
An atom with more electrons than protons is called...
a)
cation
b)
anion
c)
neutral
d)
shielded
5.
Why is this statement untrue?   A cation has a positive charge because it has gained electrons.
a)
Cations are negative.
b)
This would describe anions.
c)
A cation's positive charge is due to lost electrons.
d)
The statement is actually true.
6.

Teaching point: An electron's actual position is unknown, so you can't actually measure radius from nucleus to valence electron. Instead, the distance between the nuclei of 2 atoms of the same element is measured and cut in half. Atomic radius is actually determined by...

a)

A measurement of distance from nucleus to outermost electron.

b)

Half of the measured distance between the nuclei of two atoms of the same element.

c)

Calculation based on the number of energy levels an atom has.

d)

Half of the diameter of the nucleus.

7.

Which of the following elements would be smaller as an ion than as a neutral atom?

a)

Fluorine

b)

Phosphorus

c)

Iodine

d)

Lithium

8.

Which of the following would have a larger ionic radius than atomic radius?

a)

Sodium

b)

Calcium

c)

Zinc

d)

Chlorine

9.
Which of the following elements are in order from lowest electronegativity to highest?
a)
F, N, B, Li
b)
Ga, Si, O, He
c)
K, Al, C, F
d)
Mg, V, Mo, Os
10.
Which of the following trends would be higher for noble gases than for alkali metals?
a)
atomic radius
b)
electronegativity
c)
ionization energy
d)
ionic radius
11.
Which of the following would be higher for alkali metals than for halogens?
a)
atomic radius
b)
ionic radius
c)
electronegativity
d)
ionization energy
12.
Helium has the highest...
a)
electronegativity
b)
ionization energy
c)
atomic radius
d)
valence electrons
13.

Which of the following is NOT true about a bromine ion?

a)

It is a cation.

b)

It has a -1 charge to meet the octet rule.

c)

It is larger than a neutral bromine atom.

d)

It has more electrons than a neutral chlorine atom.

14.
Which of these has the largest atomic radius?
a)
Fluorine
b)
Arsenic
c)
Calcium
d)
Rubidium
15.
Which of these has the highest electronegativity?
a)
Sulfur
b)
Germanium
c)
Scandium
d)
Cesium
16.
Which is not true of noble gases?
a)
Highest ionization energy
b)
Highest electronegativity
c)
Smallest atomic radius
d)
Do not form ions
17.
Which is not true of alkali metals?
a)
Largest atomic radius in a period
b)
Smaller ionic radius than atomic radius
c)
Lowest ionization energy in a period
d)
Lowest electronegativity in a period
18.
Which is not true of atomic radius?
a)
Larger going down due to added energy levels expanding the size of the atom.
b)
Larger going across from left to right due to increasing nuclear charge.
c)
Noble gases have the smallest atomic radius due to highest number of protons in each period.
d)
Strontium atoms are larger than iodine atoms because iodine has more protons.
19.
Which is not true of ionic radius?
a)
Nonmetals become larger as ions.
b)
Metals become smaller as ions.
c)
When metals form an ion, they lose an energy level.
d)
Nitrogen ions are smaller than neutral nitrogen atoms.
20.
Why does fluorine have a higher ionization energy than iodine?
a)
The outer electrons are farther away from the nucleus in an iodine atom, so the attraction is lower.
b)
There are more electrons in the inner shells of a fluorine atom, so the outer electrons are shielded from the nuclear charge.
c)
Actually, iodine has a higher ionization energy than fluorine because it has a higher atomic number.
d)
Iodine has more valence electrons than fluorine.
21.
Fluorine has 7 valence electrons, 2 energy levels, and 9 protons.  Which of the following is NOT true?
a)
Fluorine's outer shell is closer to the nucleus than chlorine's, so the nuclear charge is more attractive to new electrons.
b)
Fluorine has more protons than oxygen but the same number of shells, so the nuclear charge is more attractive to new electrons.
c)
Fluorine needs one more electron to fill the octet rule, but sodium has one too many, so electrons are more likely to join fluorine.
d)
Fluorine needs one more electron to fill the octet rule, so it will gain an electron and form a +1 ion.
22.
Which is not true of Helium?
a)
It breaks the octet rule.
b)
It has a full valence shell.
c)
It has no electronegativity.
d)
It is a larger atom than hydrogen.
23.

The transition metal with the highest ionization energy is...

a)

Mercury (Hg)

b)

Zinc (Zn)

c)

Scandium (Sc)

d)

Cadmium (Cd)

24.
The transition metal with the lowest electronegativity is...
a)
Francium (Fr)
b)
Zinc (Zn)
c)
Lawrencium (Lr)
d)
Mercury (Hg)
25.
What trend is represented by this graph?
a)
Ionization energy
b)
Electronegativity
c)
Atomic Radius
d)
Ionic Radius
26.
What trend is represented by this graph?
a)
Ionization energy
b)
Electronegativity
c)
Atomic Radius
d)
Ionic Radius
27.

The element in which of the following locations is diatomic?

a)

Period 2, Group 14

b)

Period 4, Group 18

c)

Period 3, Group 16

d)

Period 2, Group 16

28.

This element is very reactive, but it is the least reactive element in its group. It is diatomic in its gaseous form, but it is a solid at room temperature. It is usually purple. It is a poor conductor and usually sublimates rather than melting.

a)

Iodine

b)

Fluorine

c)

Lithium

d)

Silicon

29.

This element is used in computer chips because of its ability to regulate electricity due to its moderate conductivity. It is a shiny, pearlescent silver at room temperature. It is brittle. It has 4 valence electrons.

a)

Carbon

b)

Silicon

c)

Lead

d)

Sodium

30.

An unknown element (X) has a larger atomic radius than iron. Which of the following is most likely to be true?

a)

X has a higher ionization energy than iron.

b)

X has a higher electronegativity than iron.

c)

X is a halogen in the same period as iron.

d)

X is an aklaline earth metal in the same period as iron.

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