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प्रश्न
Name the particles which revolve around the nucleus.
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उत्तर
Electron.
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(b) What is its mass number?
(c) Write the electronic configuration of the element E.
(d) State whether element E is a metal or non-metal. Why?
(e) What type of ion, cation or anion, will be formed by an atom of element E? Why
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- Chlorine ion
- Carbon atom
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