Question

What is the atomic number of \[{\mathbf{Mg}}\]?

Answer 1

Hint: In order to answer this problem let us first understand about atoms. The smallest unit of ordinary matter that makes up a chemical element is an atom. Atoms are incredibly thin, measuring about \[100\] Pico meters in diameter.

Complete answer:
The number of protons in the nucleus of an atom equals the element's atomic number. An oxygen atom, for example, has eight protons and eight neutrons in its nucleus. As a result, the atomic number of oxygen is eight. The atomic number is equal to the total positive charge of an element's atomic nucleus since each proton holds a single positive charge.
Any periodic table can be used to determine an element's atomic number. It's always the smaller whole number found in the table next to an element's symbol. The atomic number of an element is written to the left and below the symbol in nuclear chemistry.
Magnesium (\[Mg\]) is a chemical element with the atomic number $12$ and the symbol \[Mg\]. It's a gleaming grey solid that looks a lot like the other five elements in the periodic table's second column.

Note:
Magnesium has a density that is one-third that of aluminium. When used as an alloying agent, it improves the mechanical, fabrication, and welding properties of aluminium. These alloys are used in the manufacture of aeroplanes and automobiles. Magnesium is used in items like car seats, luggage, computers, cameras, and power tools that benefit from being lightweight. It's also used to extract sulphur from molten iron and steel.