List of top Chemistry Questions on Periodic Table

Which among the following electronic configurations belong to main group elements?
A. [Ne]3s$^1$
B. [Ar]3d$^3$4s$^2$
C. [Kr]4d$^5$3s$^2$5p$^5$
D. [Ar]3d$^10$4s$^1$
E. [Rn]5f$^7$6d$^2$7s$^2$
Choose the correct answer from the options given below:

Match List-I with List-II :

List - I(Block/group in periodic table)	List - II(Element)
(A) Lanthanoid	(I) Ce
(B) d-block element	(II) As
(C) p-block element	(III) Cs
(D) s-block element	(IV) Mn

Identify the correct answer from the options given below :

Which of the following tests is positive for the given compound [A]?