The most common isotope of hydrogen is protium, which has :

1 proton and 1 neutron

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1 proton and 0 neutrons

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O proton and 1 neutron

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1 proton and 2 neutrons

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Solution

The correct option is B
1 proton and 0 neutrons

Isotope
An isotope is one of two or more species of atoms of a chemical element with the same atomic number and position in the periodic table and nearly identical chemical behavior but with different atomic masses and physical properties.
Protium,
The most common isotope of hydrogen consists of one proton and one electron.
Unique among all stable isotopes, it has no neutrons
Therefore the correct option is (B) one proton and zero neutrons.

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Similar questions

Name an isotope of hydrogen which

i) has same number of protons and neutrons.

ii) is most abundant on earth.

Which isotope of hydrogen : Protium, deuterium or tritium has maximum ionisation energy and why?

i know about three isotopes of hydrogen-

protium , deuterium and tritium

but protium have atomic mass as 1 u.

then why it is called a isotope.

is has mass equal to simple hydrogen atom

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