Photoelectric EffectHard
Question
The atomic weight of boron is 10.81 g/mole and it has two isotopes 105B and 115B. The ratio (by number) of 105B : 115B in nature would be :
Options
A.19 : 81
B.10 : 11
C.15 : 16
D.81 : 19
Solution
Let 105B and 115B be in the ratio m:n .
Average atomic weight
10.81 =
⇒
Average atomic weight
10.81 =
⇒
Create a free account to view solution
View Solution FreeMore Photoelectric Effect Questions
Which experiment explains the wave nature of electron :-...Two lithium 6Li nuclei in a lithium vapour at room temperature do not combine to form a carbon 12C nucleus because...The order of X-ray wavelength is :-...The work function of a metal is :-...In a hypothetical atom, if transition from n = 4 to n = 3 produces visible light then the possible transition to obtain ...