1.

Unique feature of osmosis is that (A) Energy is required (B) It involves movement of solutes (C) It occurs across membranes only پا (D) It is seen only in animals​

Answer»

elium is the smallest element, and francium is the largest. From top to bottom in a GROUP, ORBITALS corresponding to HIGHER values of the principal quantum number (n) are being added, which are on AVERAGE further away from the nucleus, thus causing the size of the ATOM to increase.



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