Question

atomic mass of an element is equal to the sum of​

Answer 1

Is equal to the sum of No.of.protons&neutrons.

Hope thiz helps

Answer 2

The atomic mass of an element is equal to the sum of the number of protons and neutrons.

• Atom is made of three elements namely proton, neutron and electron. Proton and neutrons are present in the nucleus of the atom.
• Electrons are present in the shell surrounding the nucleus of the atom.
• Protons are positively charged, and neutrons are neutral. Electrons are negatively charged. These changes are responsible for the reactive state of the atom.
• The mass number is represented using the letter 'A'.

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