Please help me with both parts of this problem Part A On the basis of periodic t

Question

Please help me with both parts of this problem

Part A On the basis of periodic trends, choose the larger atom from each pair (if possible) Match the elements in the left column to the appropriate blanks in the sentences on the right. Make certain each sentence is complete before submitting your answer. Reset Help of Ge or Po, the larger atom is Po Sn Of F or Se, the larger atom is Se of Sn or I, the larger atom is I Ge of Cr or W, the larger atom is W not predictable Cr Submit My Answers Give Up incorrect; Try Again; 5 attempts remaining

Explanation / Answer

(A) According to the general trend of periodic table,

size decreases across a period and increases down a group.

All are correct except, Sn.

Both Sn and I are in same period and Sn is in 14th group , I is in 17 th group and it is known that across a period radius will be decreased. So, Sn is in larger size than I.

Po

Se

Sn

W

(B)

The order that you provided is correct. But it si increasing order. The question was decreasing order. SO, just reverse the sequence.

Rb > Ca > Si > S > F

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