Question

Is atomic mass same for all elements or is it different for different atoms? Explain

Answer 1

Answer:

HI HERE IS YOUR ANSWER

Explanation:

An element's mass number (A) is the sum of the number of protons and the number of neutrons. ... Protons and neutrons both weigh about one atomic mass unit or amu. Isotopes of the same element will have the same atomic number but different mass numbers.

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Answer 2

Atomic mass of different atoms is different.

Atom is an entity which constitutes proton, electron and neutron. Different atoms own different number of protons and electrons.

Since, number of protons, electrons and neutrons vary, the atomic mass varies according to their number. Hence, different atoms have different atomic number.

Mass of neutron - 1.67493 × 10-²⁷ kg

Mass of proton - 1.6726219 × 10-²⁷ kg

Mass of electron - 9.10938356 × 10-³¹ kg