Which of the following is correct ?(i) Lithium is better reducing agent than sodium (ii) Sodium is better reducing agent than potassium (iii) Rubidium is better reducing agent than sodium (iv) The Rubidium is better reducing agent than lithiumA. all are correctB. I,ii & iv onlyC. I,iii & iv onlyD. I,ii & iii only

Which of the following is correct ?(i) Lithium is better reducing agen

1.	Which of the following is correct ?(i) Lithium is better reducing agent than sodium (ii) Sodium is better reducing agent than potassium (iii) Rubidium is better reducing agent than sodium (iv) The Rubidium is better reducing agent than lithiumA. all are correctB. I,ii & iv onlyC. I,iii & iv onlyD. I,ii & iii only
Answer» Correct Answer - C

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A Typical characteristic of the representative element is that the first member of each group gives different present in that group. Lithium is no excepton. Through it is the first member of the alkali metal family (group f), it is anomalous in behaviour. This may be attributed to the small size of both Li and `Li^(+)` ion, high ionisation enthalpy, high polarising power, and non- availability of d-electrons in its valence shell. Which of the following ions has the lowest mobility in aqueous solution ?A. `Li^(+)`B. `Na^(+)`C. `K^(+)`D. `Cs^(+)`
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`{:(,"COLUMN-I","COLUMN-II"),((A),KHCO_(3) ,(P)"Exists in solid state"),((B),NaHCO_(3),(Q)"Soluble in water"),((C),LiHCO_(3),(R)"Hydrogen bonding"),((D),NH_(4)HCO_(3),(S)"Dimeric anion"):}`A. A-Q,B-PR,C-P,D-SB. A-PQRS,B-PQR,C-Q,D-PC. A-PQ,B-S,C-P,D-RSD. A-P,B-PS,C-R,D-Q
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