Which of the following is not true in case of reaction with heated copper at 300oC?
Which of the following is a Lewis acid?
"Lewis Acid is something that accepts a pair of electrons."
"A Lewis Base is something that donates a pair of electrons."
So Cl- would be a Lewis base.
NH3 is a Lewis Base.
BF3 is NOT a Lewis Base because it has an empty p orbital, this is a Lewis Acid.
C2H5OH is ethanol and that is a Lewis Base because the Oxygen has two lone pairs of electrons that it can donate.
Which does not contain conjugate system?
In dienes, when the double bonds connected to each other by a single bond, this arrangement is known as conjugated.
The crystal system of a compound with unit cell dimensions a=0.387, b=0.387 and c=0.0504 nm and α = β = 90o and γ = 120o is
What is the wavelength of the electron in the nth Bohr's orbit?
λ = 2 π r
Where, r = radius of the Bohr's first orbit for nth orbit =
∴ λ = (2 x n x 3.146 x 0.529)Å
The quantum number of most energetic electron in Ne atom when it is in first excited state is__
The electronic configuration of Ne atom is 1s2 2s2 2p6. In its first excitation state the electron from 2p level will unpair and shift to 3s where quantum number will be 3,0,0, 1/2
For a system in equilibrium ,∆G = 0 under conditions of constant
The frequancy factor in the collision theory is__
Among the following metal carbonyls, the C --- O bond order is lowest in :
Mn+ = 3d54s1 in presence of CO effective configuration = 3d64s0.
Three lone pair for back bonding with vacant orbital of C in CO. So, it has maximum bond order..
Fe0 = 3d64s2 in presence of CO effective configuration = 3d8 four lone pair for back bonding with CO.
Cr0 = 3d54s1
Effective configuration = 3d6. Three lone pair for back bonding with CO.
V− = 3d44s2 effective configuration = 3d6three lone pair for back bonding with CO.
Maximum back bonding is present in Fe(CO)5 therefore CO bond order is lowest here.
If 0.32 g of an organic compound containing sulphur produces 0.233g of BaSO₄. Then the percentage of sulphur in it is