Question

please give me these two questions answer​

Answer 1

Answer:

I)Metals are found to the left of the zigzag line on the periodic table. B. Nonmetals Nonmetals are found to the right of the zigzag line on the periodic table. C. Metalloids Metalloids, also called semiconductors, are the elements that border the zigzag line on the periodic table.

ii)The atomic radius of a chemical element is a measure of the size of its atoms, usually the mean or typical distance from the center of the nucleus to the boundary of the surrounding shells of electrons. ... Electrons do not have definite orbits, or sharply defined ranges.

Answer 2

Explanation:

10:-Atomic size: the distance between the center of the nucleus and the outer most shell of an atom

variation ina a group:from top to bottom the atomic radius gradually increases

variation in period:in period from left to right atomic radius gradually decreases because differentiating electron is added to same shell as atomic number increases nuclear charge increse hence atimic size decreases gradually