Isotope and Atomic Mass

Multiple Choice

Which statement best describes the characteristic shared by 3 isotopes of the same element?

• They all have the same mass number

• They share the same number of protons

• They share the same chemical stability

• They have the same number of neutrons

Multiple Choice

What is the name of the isotope that has 106 protons, 168 neutrons, and 106 electrons?

• Seaborgium-274

• Seaborgium-106

• Seaborgium-212

• Seaborgium-62

Multiple Choice

Isotopes are atoms of the same element that vary in the number of _______________-

• protons

• electrons

• neutrons

• neutrinos

Multiple Choice

What is the difference between Barium-139 and Barium-145?

• 6 protons

• 6 neutrons

• 7 protons

• 7 neutrons