Question

how mg is diffrent from mg2+
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Answer 1

Answer:

Mg is magnesium atom and Mg2+ is Magnesium ion

Explanation:

Mg is an atom and it contains 12 electrons in it.

Electronic configuration of Mg = 2,8,2

When Mg undergo chemical reaction,

it lose 2 electrons inorder to become stable.

As it loses 2 electrons, it gets 2 positive charge thus becoming an ion.

Magnesium has 12 electrons and Magnesium ion has 10 electrons

Also,

Size of Mangnesium is larger than magnesium ion

Because, Magnesium has 12 protons and 12 electrons.

thus positive and negative charge are same.

Magnesium ion has 12 protons and 10 electrons . thus, it has more positive charge and nuclear charge will be more.

as nuclear charge increase, size decreases.