Item 4 the atomic number of an atom is the number of a. neutrons b. electrons and neutrons c. protons and neutrons d. protons

It's atom

Explanation:

An atom is the basic building block of matter. An atom is made up of three smaller parts: the proton, neutron, and electron.

Which item is the largest?

A)atom

B)electron

C)neutron

D)proton

they include patterns; cause and effect; scale, proportion, and quantity; systems and system models; energy and matter; structure and function; and stability and change.

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