Question

What is the atomic number of helium

Answer 1

Hey mate!

Here's your answer!!

The atomic number of helium is 2.

#HOW?

➡ To determine the atomic number of helium, let's refer to the periodic table of elements.

➡ Take note that the chemical symbol of Helium is ‘He’. And atomic number is the number of protons present in the nucleus of the atom's element.

➡ In the Periodic Table, the atomic number is located at the top of the elements symbol.

➡Therefore, the atomic number of Helium is 2.

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Answer 2

2

The atomic number of Helium is 2.

→Atomic number of an element is defined by the number of protons existing in the nucleus of that element. Helium has 2 neutrons in its nucleus.

→It is a noble gas, that means it does not react with any element. This property is shown by Helium because it's valence shell is complete.

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