Question

40
The Third period (n = 3) ends with the element
1) Lithium
2) Argon
3) Neon
4) Sodium
O
1)
2)​

Answer 1

Answer:

Argon (2) which is last of 3rd period

Answer 2

Answer.

The third period ends with the element Argon (noble gas).

Explanation.

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