The spin only magnetic moment for the complex Hg[Co(SCN)4] is :
\(\sqrt{15}\)
Co oxidation state: x + 4(-1) = -2, so x = +2, Co2+ = 3d7
[Co(SCN)4]2- is tetrahedral: e4t23, n = 3 unpaired electrons
\(\mu_s = \sqrt{n(n+2)} = \sqrt{3(3+2)} = \sqrt{15}\) BM
The tetrahedral splitting is small and thiocyanate binds cobalt through nitrogen as a weak field ligand, so the d7 ion keeps three unpaired electrons; moments of \(\sqrt{3}\) or \(\sqrt{8}\) would need only one or two unpaired electrons.
Hence, \(\sqrt{15}\).
The hybridization for the complex ion [FeF6]3- and [Fe(CN)6]3- is :
Which of the following diatomic molecules is paramagnetic ?
Size of the d orbitals for Si, P, S and Cl follow the order :
The molecules P4 and CH4 exhibit the same :
The bond order for O2 and the hypothetical molecules N2- and O2+ will follow the trend :
According to CFT, Ni2+ can have two unpaired electrons in :
Which of the following complexes will NOT exhibit ideal octahedral geometry ?
The carbonyl stretching frequency (νCO) for the complexes (i) [Co(CO)4]- (ii) [Ni(CO)4] and (iii) [Fe(CO)4]2- will follow the trend :
The molecular formula for sodium bis (thiosulphato) argentate (I) is :
The number of terminal carbonyl ligands in the complex [η5 - CPRh(CO)]3 (where CP is cyclopentadienide anion) such that each Rhodium centre satisfies the 18 electron rule is :
.................... is a client server application that identifies each host on the internet with a unique user-friendly name.
Every OS has a ................ or .......... which primarily resides in the main memory of the computer to perform some of the basic functions of the OS.
(i) Kernel
(ii) Interface
(iii) Nucleus
(iv) Compiler
Codes:
Which of the following are referred to as low level language?
(i) Machine language
(ii) Assembly language
(iii) High level language
(iv) Natural language
Codes:
Match the following:
| List I | List II |
| (a) New York Public Library | (i) Shelv AR |
| (b) Miami University Augmented Research Group | (ii) Smart library |
| (c) Oula University Library | (iii) Wolf Walk |
| (d) North Carolina State University | (iv) Find the future |
Codes:
Which part of the QR code represents the encoded data?