................. element does not contain any neutron in it.

Helium

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L i^{2 +}

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Proton

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Hydrogen

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Solution

The correct option is D Hydrogen
Hydrogen does not contain any neutron in it.
It contains one proton in the nucleus and 1 electron outside the nulceus.
Helium nucleus contains 2 protons and 2 electrons.
$L i^{+}$ contains 3 neutrons.
Proton is not an element.

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Similar questions

(a) Name an element which does not contain a neutron.

(b) If an atom contains one electron and one proton, will it carry any charge or not?

α

Name the following :

(a) The element which does not contain any neutron m its nucleus.

(b) An element having valency 'zero'.

(d) Two atoms having the same number of protons and electrons but different number of neutrons.

(e) The shell closest to the nucleus of an atom.

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