Question
Asked Jan 24, 2020
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Enter the symbol of the element which would have 18 electrons and +1 charge.

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Expert Answer

Step 1

An atom is a smallest particle which is capable of existing independently. 

It has equal number of protons and electrons (which is equal to its atomic number) and hence it is electrically neutral.

When an atom loses electron, it becomes positively charged and is termed as cation.

When an atom gains electron, it becomes negatively charged and is termed as anion.

Step 2

Number of electrons in given species = 18

Charge = +1

Charge of +1 means the given species is a cation.

So, the number of electrons in the atom = number of electrons in cation + charge on cation

= 18...

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