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The atomic number and mass number of cal...

The atomic number and mass number of calcium are 20 and 40 respectively. Deduce the number of neutron present in the calcium nucleus.

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There are 20 neutrons in the nucleus of calcium.
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  11. Write the electronic configuration of the following element: Magnesium

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  12. Write the electronic configuration of the following element: Aluminiu...

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  13. Write the electronic configuration of the following element: Phosphoru...

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  14. Write the electronic configuration of the following element: Sulphur

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  17. Diagrammatic sketch of electronic configuration of magnesium(Atomic nu...

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  18. Diagrammatic sketch of electronic configuration of argon(Atomic number...

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  20. What is the symbols and ordinal number of the innermost shell ?

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