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victus00 [196]
3 years ago
13

What is the electron configuration of an element with atomic number 20?

Chemistry
2 answers:
larisa [96]3 years ago
7 0
If the atomic number is 20, this means the element is Calcium (Ca). 

the electron configuration of Ca is:

[Ca]= 1s^22s^22p^63s^23p^64s^2


Firlakuza [10]3 years ago
5 0

Answer: D

Explanation: The correct answer is option D for Plato users

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Explanation:

there's the answer have a good day.

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