Number of electrons in the nucleus of an element of atomic number $19$ is:

19

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20

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0

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39

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Solution

The correct option is C $0$
Number of electrons in the nucleus of an element of atomic number 19 is $0$ . A nucleus of an atom contains protons and neutrons. However electrons are not present in the nuclear. They are extranuclear particles.

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Similar questions

An element has atomic number 19 and mass number 39. How many electrons and protons are present in its unipositive ion?

19

19^{t h}

The atomic number of an element Y is 17. The number of electrons in its ion $Y^{-}$ will be
(a) 17 (b) 18 (c) 19 (d) 20

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