Basic Atomic Structure

Front

What is the atomic number of Sodium (Na)?

Back

11

Front

Which element has 20 protons?

Back

Calcium (Ca)

Front

What determines the identity of an atom?

Back

The number of protons.

Front

What determines the charge of an atom?

Back

The number of electrons.

Front

What is the isotopic symbol for Chlorine with 17 protons and 18 neutrons?

Back

35/17 Cl

Front

Which element has 2 electrons?

Back

Helium (He)

Front

What is the definition of an isotope?

Back

Atoms of the same element with different numbers of neutrons.

Front

What is the mass number of an atom?

Back

The total number of protons and neutrons in the nucleus.

Front

What is the charge of a proton?

Back

+1

Front

What is the charge of an electron?

Back

-1