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Phrases starting with the letter: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

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Definition of: mass number

Physics
1. The whole number nearest the mass of any isotope of an element: 3 and 4 are mass numbers of the isotopes of helium.
2. The number of protons and neutrons in an atom: distinguished from atomic number.

Most often used phrases:

atomic mass number
odd mass number
mass number lower
mass number higher
mass number ranging
mass number a a
mass number remains
mass number relative

Phrases starting with the letter: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

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