Chemistry
Answer
Potassium (K) has the maximum metallic character.
Reason — Lithium (Li), Sodium (Na), and Potassium (K) all belong to Group 1 (alkali metals) of the periodic table. On moving down a group, the metallic character increases because the atomic size increases and the outermost electron is lost more easily.
Since Potassium is placed below Sodium and Lithium in Group 1, it shows the maximum metallic character among the three.
Related Questions
Why is the size of (i) neon greater than fluorine ? (ii) sodium is greater than magnesium ?
Which is greater in size ?
(a) An atom or a cation
(b) An atom or an anion
(c) Fe2+ or Fe3+
(d) Fluorine or oxygen
Arrange :
(i) Be, Li, C, B, N, O, F (in increasing metallic character).
(ii) Si, Na, Al, Mg, Cl, P, S (in decreasing non-metallic character).
State the trend in chemical reactivity :
(i) Across the third period from left to right,
(ii) Down the group.
(a) in group IA (1) (b) in group VIIA (17)