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Elements and atomic number

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Elements and atomic number

Posted by Rita Brahma 7 years, 7 months ago

CBSE > Class 10 > Science

1 answers

Yogita Ingle 7 years, 7 months ago

Element: An element is made up of 3 particles, protons, neutrons and electrons. In the centre of an element there is a nucleus which contains protons and neutrons. Around an element are shells, also known as orbits which contain the electrons in an element. Protons have a positive charge and electrons have a negative charge, although neutrons have no charge at all.
Atomic number: The total number of protons in the nucleus of an atom gives us the atomic number of that atom. It is represented with the letter ‘Z.’ All the atoms of a particular element have the same number of protons, and hence the same atomic number.

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