Chemistry, asked by poojasuba3922, 10 months ago

An element has three electrons in the 4th shell, the atomic number of the element is…………

Answers

Answered by karthikmanikandanrav

Answer:

scandium(Z=21)

Explanation:

This is because the 1 st shell consists 2 electrons, the 2nd shell consists 8 electrons ,the 3rd shell consists 8 electrons and the 4th shell consists 3 electrons.Therefore 2+8+8+3=21. the element which has an atomic number 21 is scandium.

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