Question

$\huge\mathcal\orange{HEYA}$
Which of the given elements A, B, C, D and E
with atomic number 2, 3, 7, 10 and 30
respectively belongs to the same period -
(1) A,B,C
(2) A,D,E
(3) B,D,E
(4) B,C,D​

Answer 1

Hey mate ..

Your answer is (4) B,C,D .

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Hope you get it...✔✔✔

Answer 2

Answer:

Hey Mate...

Here is the answer....

For being in a same period the properties should be same...

Therefore, according to my logic , Answer should be D.

Explanation:

If we see the periodic then the elements with at.no. 3 to 10 ie Li to Ne lie in same period....

Thus the answer is D.....