Chemistry - PERIODIC TABLE Question with Solution | TestHub
Match the column - I with column - II and select CORRECT code for your answer :-
Column - I | Column - II |
|---|---|
(A) | (P) Decreasing order of IE |
(B) | (Q) Increasing order of Radius |
(C) | (R) Increasing order of EA |
(D) | (S) Increasing number of valence shell electrons |
| (T) Increasing Z/e ratio |
Options:
Answer:
Solution:
(A) Li, Na, K
Down the group:
Ionization energy (IE) decreases → (P) Decreasing order of IE
Atomic radius increases → (Q) Increasing order of radius
(B) Mg, Ca, Sr
Down Group 2:
IE decreases → (P)
Radius increases → (Q)
(C) Li, Be, B
Across Period 2:
Number of valence electrons increases (1 → 2 → 3) → (S)
(D) Na⁺, Mg²⁺, Al³⁺
These are isoelectronic species (all have 10 electrons)
With increasing nuclear charge:
Electron affinity trend (effective attraction) increases → (R)
Z/e ratio increases → (T)
