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What two particles determine the mass number?
Protons and electrons
Electrons and neutrons
Protons and neutrons
What type of atom is this?
The number of protons + neutrons in an atomic nucleus is referred to as what?
What does the atomic number identify?
The number of neutrons of a given atom.
The number of protons of a given atom.
The number of neutrons and protons of a given atom.
The number of electrons of a given atom.
The atomic number is equal to _.
the number of protons
the number of neutrons only
the total number of protons and neutrons
the number of protons, neutrons, and electrons
How many protons does fluorine have?
How many neutrons does nitrogen have?
How many electrons does silicon have?
What is the atomic mass for the element in this image?