Question

As you move from row ______ to row ______ in the periodic table, the atomic radius of the elements DECREASES.? A) 1 to 7 B) 1 to 18 C) 7 to 1 D) 18 to 1

Answer 1

Well, there's a hint in the question.

As you move from row ----- to row ------ in the periodic table, the atomic radius of the elements DECREASES.?

And we have 7 rows in a periodic table, so the answer has to either A) 1 to 7 or C) 7 to 1
Theoretically,
Atomic size increase as we move from top to bottom as an extra shell gets added up with every period.

SO, the answer is, C) 7 to 1