Free Printable Isotopes Review

Worksheets

Name

Class

Date

If X is the symbol for an element, which of the following two symbols represent isotopes of the same element? I. ⁷⁷₃₅X II. ⁷⁷₃₃X III. ⁸¹₃₇X IV. ⁸¹₃₅X

I and II

III and IV

I and IV

I and III

Isotopes are atoms of the same element with different #’s of __________ & therefore different __________.

n⁰ ; atomic #’s

p⁺ ; atomic #’s

e^- ; atomic masses

n⁰ ; atomic masses

How many protons does this isotope of titanium have?

In which of the following is the number of neutrons correctly represented?

$\frac{24}{12}Mg$ has 24 neutrons

$\frac{19}{9}F$ has 0 neutrons

$\frac{75}{33}As$ has 108 neutrons

$\frac{238}{92}U$ has 146 neutrons

What does the number 14 in the name Carbon-14 represent?

Atomic Number

Mass Number

Twice the number of protons

The sum of the protons and electrons

Using the table, in which of the Carbon isotopes is the number of neutrons 8?

$12_C$

$13_C$

$14_C$

None of the above

Use the Periodic Table to answer the following question about isotopes. What is the Mass Number for Sulfur-34?

Use the Periodic Table to answer the following question about isotopes. What is the Atomic Number for Sulfur-34?

Use the Periodic Table to answer the following question about isotopes. How many neutrons are there in Sulfur-34?

10.

Use the Periodic Table to answer the following question about isotopes. What is the Isotope Notation for Sulfur-34?

34 / 16 S

16 / 34 S

18 / 34 S

34 / 18 S

Reset

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