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Atomic Radius Groups

Total questions: 22

Worksheet time: 59mins

Name
Class
Date
1.

Which atom has the largest atomic radius?

a)

potassium

b)

rubidium

c)

francium

d)

cesium

2.
As you move down the periodic table atoms get bigger.  This is because ____________.
a)
The atoms have more mass.
b)
The atoms have more protons.
c)
The atoms have more energy levels
d)
The atoms have more nuetrons
3.
As you move across the periodic table atoms tend to get smaller because, ______________.
a)
the atoms have more mass.
b)
the atoms have less mass
c)
the atoms have more protons.
d)
the atoms have less electrons.
4.

The atom with the largest atomic radius in Group 18 is -

a)

Ar

b)

He

c)

Kr

d)

Rn

5.
Which periodic group has the smallest atomic radius?
a)
Alkali metals
b)
Halogens
c)
Noble Gases
d)
Transition metals
6.

Atomic radius generally increases as we move __________.

a)

down a group and from right to left across a period

b)

up a group and from left to right across a period

c)

down a group and from left to right across a period

d)

up a group and from right to left across a period

7.

The more protons there are, the ____ .

a)

Weaker the pull

b)

Smaller the electrons

c)

Stronger the pull

d)

The bigger the electrons

8.

Which one has the largest radius?

a)

Lithium (Li, atomic #3)

b)

Boron (B, atomic #5)

c)

Neon (Ne, atomic #10)

d)

Nitrogen (N, atomic #7)

9.

The diameter of an atom is also the distance between _____ .

a)

The total length of two atoms

b)

The centers of two atoms

c)

An electron to a proton

d)

Two neutrons

10.

Of the elements Al, Mg, Si, Na, which has the smallest atomic radius?

a)

Al

b)

Mg

c)

Si

d)

Na

11.

Rank the following elements by increasing atomic radius:

carbon, aluminum, oxygen, phosphorus.

a)

O, C, P, Al

b)

Al, P, C, O

c)

O,P, C, Al

d)

O, P, Al, C

12.

Which of the following elements would be smaller: indium or gallium?

a)

indium

b)

gallium

c)

both atoms are the same size

d)

cannot be determined

e)

the sizes can vary

13.

Which of the following elements would be the smallest: copper, zinc, silver or cadmium?

a)

copper

b)

zinc

c)

silver

d)

cadmium

e)

cannot be determined

14.

Which of the following elements would be the largest: copper, zinc, silver or cadmium?

a)

copper

b)

zinc

c)

silver

d)

cadmium

e)

cannot be determined

15.

Why is iodine larger than bromine?

a)

iodine has a greater number of electrons than bromine

b)

iodine has a greater number of protons than bromine

c)

iodine has more occupied energy levels and greater shielding than bromine

d)

iodine has more neutrons than bromine

e)

iodine has more valence electrons than bromine

16.

Which of the following would have the smallest atomic radius?

a)

K

b)

Br

c)

Ga

d)

Ge

17.

Arrange the following elements by increasing atomic radius: Rb, Sr, Cs, Ba

a)

Rb, Sr, Cs, Ba

b)

Ba, Cs, Rb, Sr

c)

Sr, Rb, Ba, Cs

d)

Sr, Cs, Ba, Rb

18.

Which of the following has the largest ionic radius?

a)

Ba2+

b)

Cs+

c)

I-

d)

Te2-

19.

Which of the following has the smallest ionic radius?

a)

O2-

b)

S2-

c)

Mg2+

d)

Ca2+

20.

Which atom has the smallest atomic radius?

a)

potassium

b)

rubidium

c)

francium

d)

cesium

21.

Rank these elements from smallest atomic radius to largest atomic radius: Ag, Au, Cu, Rg

a)

Ag, Au, Cu, Rg

b)

Au, Ag, Rg, Cu

c)

Rg, Au, Ag, Cu

d)

Cu, Ag, Au, Rg

22.

Which of the following will have a larger radius than Zinc?

a)

Gallium

b)

Aluminum

c)

Magnesium

d)

Strontium

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