Question

10) explain atomic number and mass? number?​

Answer 1

Answer:

Neutral atoms of each element contain an equal number of protons and electrons. The number of protons determines an element's atomic number and is used to distinguish one element from another.  Together, the number of protons and the number of neutrons determine an element's mass number.

Explanation:

Answer 2

Answer:

The mass number (symbol A, from the German word Atomgewicht [atomic weight]), also called atomic mass number or nucleon number, is the total number of protons and neutrons (together known as nucleons) in an atomic nucleus...

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