What isotope has 18 protons and 22 neutrons?

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What isotope has 18 protons and 22 neutrons?

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Answer 1 · 2016-02-04T13:37:52

This a neutral atom of $A r g o n$ $Argon$ .

Explanation:

Always remember that the number of protons represent the Atomic no. of that particular element.

In this case the number of protons is $18$ $18$ ,So,the atomic no. is also $18$ $18$ .

And the element with atomic no. $18$ $18$ is $A r g o n$ $Argon$ with symbol $A r$ $Ar$

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Now we need to find the mass number of $A r g o n$ $Argon$ .
Because $M a s s$ $Mass$ $n$ $n$ $u m b e r - A t$ $umber-At$ $o m i c$ $omic$ $n$ $n$ $u m b e r$ $umber$ $=$ $=$ $N$ $N$ $o$ $o$ $o f$ $of$ $n$ $n$ $e u t r o n s$ $eutrons$

Mass number of Argon= $40$ $40$

No of Neutrons $= 40 - 18 = 22$ $=40-18=22$

A neutral atom of argon also has $22$ $22$ Neutrons.

So,It is clear that this is not an isotope but a neutral atom of $A r g o n$ $Argon$

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What isotope has 18 protons and 22 neutrons?

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