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Hello Kasireddy,

The electronic confugaration of Copper (Cu) is [Ar]  but not .

This is because of

stability of completely filled d sub-shell.

The completely filled & hlaf-filled sub-shells are stable.

The causes of stability of completely filled & half filled sub-shells are due to following reasons

1) symmetrical distribution of electrons

2) exchange energy

due to above reasons Copper has [Ar]  electronic confuguratiion.

Thank you

Hello Geeta,

The term degenerated indicates containing nearly same enegry. In d-subshell, the 5 orbitals are degeneted.

among the the above options   , are degenerated.

*Hint- d-obritals which are in same shell are degenerated (until they are under the influence of any other ligands)

Answer is A

Orbital angular momentum depends on the value of azimuthal quantum number.

Azimuthal Quantum Number describes the shape of the orbital.

It is represented as 'l'.

The value of l ranges from 0 to (n-1). For l = 0,1,2,3... the orbitals are s, p, d, f...

The orbital angular momentum of an electron is given by

l = azimuthal quantum number

h = plank's constant

Thus Orbital angular momentum depends on the value of azimuthal quantum number i.e the value of l.

Thank you.

Hybridization expalains the formation and structure of heteroatomic molecules. According to hybridization theory

in  

B is the central atom which underoes  hybridization. B has 3bond pairs with no lone pairs.

  has trigonal planar geometry. (just like fan) 

in  

C is the cental atom. C undergoes  hybdridization. C has 4bond pairs with no lonepairs.

 has tetrahedral geometry.

in  

C is the cetral atom. C undergoes  hybdidization. C has 2bond pairs withno lone pairs.

 has linear geometry.

in  

N is the central atom. N undergoes  hybdidization. N has 3bondpairs with 1lone pair..

 has pyramidal geometry.

Bond formed by the transfer of electrons is known as ionic bond whereas by rhe sharing of electrons is known as covalent bond...

Na = 2,8,1

Cl= 2,8,7

Na donates ite one valence electron to Cl and attains stability while Cl takes and attain stability...

Na - e = Na^+

Cl + e = Cl^-  and  compound 

NaCl is formed...

In Cl2 both the chlorine atoms share one electron each and attain stability through covalent bond...shared electrons are counted for both the participating atoms.