Alchemy Quiz 10

Lithium has an atomic number of 3 and an average atomic mass of 6.941 amu. Which isotope would you find in the greatest abundance for lithium?

• lithium-7

• lithium-4

• lithium-6.95

• lithium-6.9

• lithium-6

In the isotope symbols shown below, what does the number on the left above the “C” represent?

• number of protons

• number of neutrons

• atomic number

• mass number

Tags

NGSS.MS-PS1-1

What is different about the three different isotopes shown?

• number of nuclei

• number of protons

• number of neutrons

• number of electrons

Tags

NGSS.MS-PS1-1

Calcium has an atomic number of 20. What is the correct isotope symbol for calcium-44?

• A

• B

• C

• D

Tags

NGSS.MS-PS1-1

Isotopes of the element uranium have different:

• numbers of protons.

• numbers of electrons.

• atomic numbers.

• atomic masses.

The number of neutrons most likely to be found in a boron atom (#5) is:

• 3

• 5

• 6

• 11

A deuterium atom has one neutron and a mass of ____ amu.

• 1

• 2

• 3

• 4

Which of the following is NOT an isotope of hydrogen?

• protium

• deuterium

• tritium

• hyperbium

Tags

NGSS.HS-PS1-8

Isotopes of an element have different:

• atomic numbers

• numbers of protons

• numbers of neutrons

• numbers of electrons

How many neutrons are in the isotope tritium?

• 0

• 1

• 2

• 3