Question

Given below are the spectral lines for an atom of hydrogen. Mark the lines which are not correctly matched with the value of $n_{1}$ and $n_{2}$?

	Series	$n_{1}$	$n_{2}$	Region
(i)	Lyman	1	2,3,…	Ultraviolet
(ii)	Balmer	2	3,4,…	Infrared
(iii)	Paschen	3	4,5,…	Infrared
(iv)	Pfund	4	5,6,…	Infrared

• A. (i) and (ii)
• B. (i) and (iii)
• C. (ii) and (iv)
• D. (i) and (iv)

Answer 1

Answer: (C)

(ii) and (iv)

Answer 2

: (ii) Balmer,$n_{1} = 2;n_{2} = 3,4;$ region – visible

(iv) Pfund, $n_{1} = 5;n_{2} = 6,7;$ region – infrared