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Answered on 01 Jan Learn Structure of Atom

The electronic configuration of valence shell of Cu is 3d10 4s 1 and not 3d94s2. How is this configuration explained?

Mallela Harish

Lecturer in Chemistry with 6+ years of teaching experience

Hello Kasireddy, The electronic confugaration of Copper (Cu) is 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... read more

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

 

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Answered on 29/12/2021 Learn Structure of Atom

Which of the following orbitals are degenerate? 3dxy, 4dxv, 3dyz, 3dz2:, 4dyz., 4dz2:

Mallela Harish

Lecturer in Chemistry with 6+ years of teaching experience

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) read more

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)

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Answered on 01 Jan Learn Structure of Atom

Show the distribution of electrons in oxygen atom (atomic number 8) using orbital diagram. "

Mallela Harish

Lecturer in Chemistry with 6+ years of teaching experience

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Answered on 01 Jan Learn Structure of Atom

Orbital angular momentum depends on (a) l (b) n and l (c) n and m (d) m and s"

Mallela Harish

Lecturer in Chemistry with 6+ years of teaching experience

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... read more

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.

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Answered on 06 Jan Learn Chemical Bonding and Molecular Structure

Discuss the significance/applications of dipole moment.

Syed Ali

Tutor

The value of dipole moment ist used to identify the type of chemical bonding, isomers of benzenes, Cis- trans isomerism and Raman spectrum.
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Answered on 10 Jan Learn Chemical Bonding and Molecular Structure

Predict the shapes of the following molecules on the basis of hybridization. BC13, ch4, co2, nh3

Mallela Harish

Lecturer in Chemistry with 6+ years of teaching experience

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... read more

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.

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Answered on 01 Jan Learn Chemical Bonding and Molecular Structure

All the C – O bonds in carbonate ion (CO2-3) are equal in length. Explain.

Sunita Khanna

Mrs Khanna's Online Chemistry Classes

Because of resonance..
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Answered on 01 Jan Learn Chemical Bonding and Molecular Structure

What is an ionic bond? With two suitable examples explain the difference between an ionic and covalent bond?

Sunita Khanna

Mrs Khanna's Online Chemistry Classes

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... read more

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.

 

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Answered on 25/12/2021 Learn Chemistry +2 Chemical Reactions and Equations Chemical Bonding and Molecular Structure

Pranav Kumar

Physical
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Answered on 29/12/2021 Learn Chemistry +2 Chemical Reactions and Equations Chemical Bonding and Molecular Structure

Which is the best chemistry branch for Msc in chemistry?

Priyanshu Dhingra

PCB Made Simple By PD

It depends upon your ability and interest. Organic is good if good in biology. Physical if good in maths. Inorganic if you like analysing and find of periodic table and chemical reactions.
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