Which of the following is not possible ?
n = 2, l = 0, m = -1
Which of the following sets of quantum numbers is correct for an electron in 4 f -orbital ?
n = 4, l = 3, m = + 1, s = + 1/2
Non-directional orbital is
In a multi-electron atom, which of the following orbitals described by the three quantum numbers will have the same energy in the absence of magnetic and electric fields ?
I . n = 1, l = 0, m = 0
II. n = 2, l = 0, m = 0
III. n = 2, l = 1, m = 1
IV n = 3, l = 2, m = 1
V. n = 3, l = 2, m = 0
IV & V
Which one of the following oxidation states is not possible in metal carbonyls ?
The oxidation number of chromium in potassium dichromate is
The loss of electron is termed as
State the oxidation number of carbonyl carbon in methanal and methanoic acid, respectively
1) 0 and 0
2) 0 and + 2
3) + 1 and + 2
4) + 1 and + 3
0 & +2
Which quantities are conserved in all redox reactions?
Oxidation number of sulphur in Caro's acid is