Given is a helium atom. Inside the nucleus , there are 2 protons denoted by blue colour and the other two are neutrons denoted by green colour
- Chemical element helium has the atomic number 2 and the symbol He. It is the first member of the noble gas group in the periodic table and is a colorless, odorless, tasteless, non-toxic, inert, monatomic gas.
- Neutrons have no charge, protons have a positive charge, and electrons have a negative charge.
- One proton's positive charge and one electron's negative charge are equal.
- While electrons have essentially negligible mass, protons and neutrons each have a mass of 1.
- While electrons quickly revolve around the nucleus in fixed circular orbits, protons and neutrons are present collectively in the nucleus at its center.
- The nucleus, located in the heart of the atom, is home to protons and neutrons, which are heavier than electrons.
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