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17 February, 08:04

What is the key difference that causes the atoms of one element to differ from the atoms of the other elements? A the number of neutrons B the number of protons C the number of electron shells D the number of isotopes

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  1. 17 February, 11:18
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    B = the number of protons

    Explanation:

    The atom of every elements differ from each other because of number of protons they have.

    Every atom consist of neutron, proton and electron. Protons and neutrons are present with in nucleus while the electrons are present out side the nucleus.

    All these three subatomic particles construct an atom. A neutral atom have equal number of proton and electron.

    The number of neutrons may be same but every atom have different number of protons.

    Neutron and proton are present inside the nucleus. Proton has positive charge while neutron is electrically neutral. Proton is discovered by Rutherford while neutron is discovered by James Chadwick in 1932.

    Symbol of proton = P+

    Symbol of neutron = n0

    Mass of proton=1.672623*10-27 Kg

    Mass of neutron=1.674929*10-27 Kg
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