What is the frequency ratio between two radiations of wave length 400nm and 700nm in the visible spectrum ?
14/8
4/7
8/14
15/8
What will be the total spin resulting from a d6 configuration?
3
3/2
1
2
How many number of spherical nodes will be in 4p orbitals ?
Zero
Which one has the same unit that of Planck's constant ?
Energy
Work
Angular momentum
Linear momentum
What is the number of electrons in K19 which have n = 3 and l = 1 ?
6
8
The wave length of the first line of Balmer series of hydrogen atom is 6561Ao. The wave length of the third line of the series is
2180 Ao
4339 Ao
13122 Ao
5865 Ao
How many electrons will be present in the highest principal energy level of cobalt (z = 27) ?
7
9
Isotones are nuclei having
Same atomic numbers
Same mass number
Same number of protons
Same number of neutrons
In an atom with 2K, 8L and 13M electrons,what will be the total number of 'p' electrons ?
12
4
An element 'm' has an atomic mass 27 and atomic number 13.How can its ion be represented ?
M3+
M2+
M+
M-
