Chemistry - PERIODIC TABLE Question with Solution | TestHub
List - I (Order) | List - II (Properties) |
|---|---|
(P) | (1) Atomic radius |
(Q) | (2) First ionisation energy |
(R) | (3) Metallic character |
(S) | (4) Number of electrons in penultimate shell |
| (5) Second ionisation energy |
The correct code is :
Options:
Answer:
Solution:
Question Explanation: Match periodic trends with the given elemental orders.
Concept: Periodic Properties Trends
Solution:
(P) K < Na < Li : Down the group, IE decreases and size increases. This order shows decreasing size (incorrect) but increasing IE (correct).
(Q) Ca > Mg > Be : Shows increasing size and decreasing IE .
(R) K > Ca : Potassium is larger and more metallic than Calcium.
(S) C > Si > Ge: Shows decreasing IE and decreasing size (incorrect).
Match based on group/period trends.
P matches 2 (First IE) and 5 (Second IE).
Q matches 1 (Atomic Radius) and 3 (Metallic Character).
Final Answer: P-2,5; Q-1,3; R-1,3,5; S-2