Calculating Subatomic Particles in Isotopes and Ions

Which of the following statements is true about isotopes?

• Isotopes of an element have different numbers of protons but the same number of neutrons.

• Isotopes of an element have the same number of protons but different numbers of neutrons.

• Isotopes of an element have different numbers of protons and neutrons.

• Isotopes of an element have the same number of protons and neutrons.

An isotope of oxygen has an atomic number of 8 and a mass number of 16. How many neutrons does this isotope have?

• 8

• 16

• 24

• 32

• 10

• 12

• 14

• 16

Which element has 6 protons?

• Carbon

• Oxygen

• Nitrogen

• Sulfur

An isotope of potassium has a mass number of 39 and an atomic number of 19. How many neutrons does this isotope have?

• 19

• 20

• 39

• 58

If an ion has 11 protons, 12 neutrons, and 10 electrons, what is the charge of the ion?

Identify the isotope with a mass number of 24 and 12 neutrons.

Tags

NGSS.MS-PS1-1