Free Printable Ions and Isotopes

1.

To change Li to Li⁺, you need to:

a)

add one electron

b)

remove one proton

c)

remove one electron

d)

add one neutron

2.

Fe²⁺ and Fe³⁺ are different iron:

a)

ions

b)

isotopes

c)

neutrons

d)

molecules

3.

¹⁴₆C and ¹²₆C are examples of carbon:

a)

ions

b)

isotopes

c)

neutrons

d)

molecules

4.

¹⁴₆C has how many protons?

a)

6

b)

12

c)

14

d)

20

5.

Li⁺ and Cu²⁺ are examples of:

a)

ions

b)

isotopes

c)

molecules

d)

elements

6.

What is the symbol for an ion which has 8 protons and 10 electrons?

a)

$_7^{14}\ N\ ^{-3}$

b)

$_8^{16}\ O\ ^{-3}$

c)

$_8^{16}\ O\ ^{-2}$

d)

$_9^{19}\ F\ ^{-1}$

7.

What is the nuclear symbol for the isotope of oxygen which has 9 neutrons?

a)

¹⁶₈O

b)

¹⁷₈O

c)

¹⁸₈O

8.

Li⁺ has how many electrons? (hint: the atomic number of lithium is 3)

a)

0

b)

1

c)

2

d)

3

9.

How many protons, neutrons, and electrons does ⁷₄Be²⁺ have?

a)

4, 3, 2

b)

4, 3, 4

c)

4, 3, 6

d)

4, 6, 3

10.

$_7^{14}$ N³⁻ has:

a)

7 protons and 4 electrons

b)

7 protons and 10 electrons

c)

7 protons and 11 electrons

d)

7 protons and 7 neutrons

Ions and Isotopes

Total questions: 10

Worksheet time: 3mins

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