Consider the following statements: (i) Atomic radii decreases across a row of the periodic table when we…
Consider the following statements:
(i) Atomic radii decreases across a row of the periodic table when we move from left to right.
(ii) Atomic radii increases down the column as we move from top to bottom.
(iii) Although the order of elements is based on atomic numbers, vertical families share similar chemical properties.
Which of the statement(s) given above is/are correct?
(i) and (ii)
(i) and (iii)
(ii) and (iii)
(i), (ii) and (iii)
Solution
(i) Atomic radii decreases across a row of the periodic table due to increasing effective nuclear charge, pulling electrons closer to the nucleus.
(ii) Atomic radii increases down the column due to the addition of electron shells.
(iii) Vertical families share similar chemical properties because elements in the same group have similar outer electron configurations.