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Identify the element by its Atomic structure.

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Identify the element by its Atomic structure.

(a) Helium

(b) Hydrogen

(c) Carbon

(d) Oxygen

I have been asked this question in an interview for job.

I need to ask this question from Atomic Structure topic in chapter Nuclear Power Plant of Energy Engineering

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Right option is (b) Hydrogen

The explanation: Most of the mass of the atom is in nucleus. The red dot is a proton it has positive charge of 1 unit, and black one is an electron, which has a negative charge of -1. There is only one orbital for hydrogen.

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