Which transition in H atom will emit maximum frequency of photon ?
a) n=4 to n=1
b) n=2 to n=1
c) n=4 to n=2
d) n=1 to n=5

Question

Which transition in H atom will emit maximum frequency of photon
?
a) n=4 to n=1
b) n=2 to n=1
c) n=4 to n=2
d) n=1 to n=5

Vartika Jain · Accepted Answer

Dear Student,

We know that, E= hv=hcλand, 1λ= R(1n12-1n22)or, cλ=Rc(1n12-1n22)or, v=Rc(1n12-1n22)When n1= 1 and n2=4v=Rc(112-142)=Rc(16-116)= Rc(1516)=Rc(0
9375)When n1= 1 and n2=2v=Rc(112-122)=Rc(4-14)= Rc(34)=Rc(0
75)When n1= 2 and n2=4v=Rc(122-142)=Rc(4-116)= Rc(316)=Rc(0
1875)When n1= 1 and n2=5v=Rc(112-152)=Rc(25-125)= Rc(2425)=Rc(0
96)Clearly, n=1 to n=5 will have maximum frequency
 Hence, correct answer is (d)

Which transition in H atom will emit maximum frequency of photon ? a) n=4 to n=1 b) n=2 to n=1 c) n=4 to n=2 d) n=1 to n=5

Which transition in H atom will emit maximum frequency of photon ?
a) n=4 to n=1
b) n=2 to n=1
c) n=4 to n=2
d) n=1 to n=5