ICP - Isotopes

An isotope of which element has an atomic number of 6 and a mass number of 14?

• carbon

• magnesium

• nitrogen

• silicon

Isotopes of the same element must have the same

• atomic number (number of protons)

• mass number

• number of nuclei

• number of neutrons

Compared to an atom of ¹²C, an atom of ¹⁴C has

• more protons

• fewer protons

• more neutrons

• fewer neutrons

Which of the following describes a nucleus that is an isotope of an element with 10 protons and 11 neutrons?

• 10 protons and 9 neutrons

• 11 protons and 10 neutrons

• 9 protons and 11 neutrons

• 11 protons and 12 neutrons

Different isotopes of the same element must have a different

• mass number

• atomic number

• number of protons

• number of electrons

Atoms of every isotope of calcium have the same

• atomic mass

• atomic number

• number of neutrons

• number of nucleons

A neutral atom with 6 electrons and 8 neutrons is an isotope of

• carbon

• silicon

• nitrogen

• oxygen

Which atoms represent different isotopes of the same element?

• 
• 
• 
• 

As the mass number of an isotope increases, the number of protons...

• decreases

• increases

• remains the same

Atoms of ¹⁶O, ¹⁷O, and ¹⁸O have the same number of

• neutrons, but a different number of protons

• protons, but a different number of neutrons

• protons, but a different number of electrons

• electrons, but a different number of protons