Classification Of Elements And Periodicity In Properties Ques 320
Question: Match List-I with List-II and select the correct answer using the code given below the lists:
| List - I | List - II |
|---|---|
| $ CO_3^{2-} $ | (p) Semi-metals |
| $ B,Si,Ge, $ | (q) Isoelectronic species |
| $ As,Sb $ | (r) Van der waal’s radii |
| $ Kr,Xe $ | (s) lonisation energy |
M(g) + energy $ \to {{M}^{+}}(g)+{{e}^{-}} $
Code:
Options:
A) [A] $ \to $ q, [B] $ \to $ p, [C] $ \to $ r, [D] $ \to $ s
B) [A] $ \to $ p, [B] $ \to $ q, [C] $ \to $ r, [D] $ \to $ s
C) [A] $ \to $ q, [B] $ \to $ p, [C] $ \to $ s, [D] $ \to $ r
D) [A] $ \to $ r, [B] $ \to $ p, [C] $ \to $ q, [D] $ \to $ s
Show Answer
Answer:
Correct Answer: A
Solution:
[a] [a] Have same number of electrons - So isoelectronic species [b] Has metallic as well as non-metallic properties-semi metal [c] Exist as mono atomic molecules & are held together by weak vander Waal’s forces-so radius is defined as van Waal’s radius [d] Energy required to remove an electron from valence shell of a gaseous atom is called I.E.
