Examine the statements below:
(i) As we move from left to right across a period, atomic size generally decreases.
(ii) As we go from top to bottom in a group, atomic size generally increases.
(iii) Even though the periodic table is arranged according to atomic number, elements in the same

Question

Examine the statements below:
(i) As we move from left to right across a period, atomic size generally decreases.
(ii) As we go from top to bottom in a group, atomic size generally increases.
(iii) Even though the periodic table is arranged according to atomic number, elements in the same vertical group show similar chemical behavior.
Which of the statements given above are correct?

Accepted Answer

(i), (ii) and (iii). Atomic size decreases across a period (i), increases down a group (ii), and same-group elements show similar chemistry (iii) - all three are true, so the answer is (i), (ii) and (iii). The stored answer omits the true statement (ii).

Solution

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