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The mass number of an element is twice ...

The mass number of an element is twice its atomic number. If there are four electrons in 2p orbitals, Write the electronic configuration of the element and name it.

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The electronic configuration of element is `1s^(2)2s^(2)2p^(4)`. Its atomic number (Z) is 8 and mass number (A) is 16. The element is oxygen.
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