2. Atoms & Elements

Two isotopes of the same element will have the same number of _____ but a different number of ____.

How many protons, neutrons, and electrons are there in a neutral atom of ³⁰P (phosphorus-30)?

An isotope of yttrium has 39 protons and 59 neutrons. What is the mass number of that isotope?

The superscript preceding each hydrogen atomic symbol (H) represents which of the following?

All of the atoms making up any given element have the same number of ________.

How many protons, neutrons, and electrons make up an atom of nitrogen-15?

Can two atoms with the same mass number ever be isotopes of each other? Explain.

Can two atoms with the same mass number ever be isotopes of each other?