Question

Write a short note on mass number

Answer 1

$\huge\mathfrak{Ello!!!!}$

Answer ________________❤

➡Mass number. The mass number (symbol: A) of an atom is the sum of the number of protons and the number of neutrons in the nucleus. The mass number is different for each isotope of a chemical element. We write a mass number after an element's name or as a superscript to the left of an element's symbol.

➡For example, nitrogen has 7 protons and 7 neutrons in its nucleus, giving it a mass number of 14. Isotopes of elements are distinguished by their mass number; for example, carbon-12 and carbon-14 have mass numbers of 12 and 14 respectively. Also called nucleon number Compare atomic mass atomic weight .

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Høpe ThaT wiLL HeLp uhh ØuT☺

#SweetStaR♥

Answer 2

➡Mass number. The mass number (symbol: A) of an atom is the sum of the number of protons and the number of neutrons in the nucleus. The mass number is different for each isotope of a chemical element. We write a mass number after an element's name or as a superscript to the left of an element's symbol.

➡For example, nitrogen has 7 protons and 7 neutrons in its nucleus, giving it a mass number of 14. Isotopes of elements are distinguished by their mass number; for example, carbon-12 and carbon-14 have mass numbers of 12 and 14 respectively. Also called nucleon number Compare atomic mass atomic weight .

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