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What people are asking?

Adithyan Sanal

May 4, 2015

 Calculate the total number of electrons present in one mole of methane


The molecular formula of methane is CH4.

Answer (3)

Tuba

May 18, 2014

Calculate the frequency and energy of a photon of radiation having wavelength 3000 Ao.

This answer has an image. Please click on the question to read more.

Answer (2)

Tushara

May 1, 2014

Pls

Answer.

No.of waves = circumference of electron orbit / wave length

Answer (2)

Tushara

May 1, 2014

Pls

For 1st line in Balmer series n1 =2,n2=3
1/λ1= 109678[ 1/n12 -1/n22  ]
=109678[1/...

Answer (1)

Dinesh

Aug 10, 2014

WHAT IS RADIAL NODE AND ANGULAR NODE? DEFINE AND DIFFRENTIATE?

A node is a point where the electron probability is zero. 
For a given orbital there are two types of nodes.
1) Radial node  2) Angular node
Radial node is also called a...

Answer (2)

Hrushikesh

Sep 18, 2015

Write any four postulates of daltons atomic theory

John Dalton, a British school teacher, published his ...

Answer (3)

Ambati

May 3, 2014

Maximum number of electrons in a sub shell with l=3& n=4 is;

In this question l=3 means the sub shell is f & n=4 means it is present in 4th orbit.
Finally it is a 4f sub shell.
The no of orbital in f sub shell =2...

Answer (1)

Sukirtha

Aug 17, 2014

a bulb emits light of wavelength 4500Å.The bulb is rated as 150 watt and 8% of the energy is emitted as light.How many photons are emitted by the bulb per second?

Ans:  Each photon has energy of  hν

Answer (1)

Chandra Kant

May 7, 2015

The number of electrons, protons and neutrons in a species are equal to 18 , 16 , 16 respectively. assign the proper symbol to the species . and why please explain it briefly?

As we know that atom...

Answer (1)

Rejitha Krishnan RG

Sep 11, 2014

write the quantam numbers for the last electron in chromium(Z=24)?

The electronic configuration of chromium is 1s2 2s2 2p6 3s2 3p6 4s1 3d5.
The last electron comes in 3d orbital.
Quantum numbers for the last electron in  Cr :
n = 3 ,l= 2, m= +2 , s= +...

Answer (1)

Adithyan Sanal

May 4, 2015

 Calculate the total number of electrons present in one mole of methane


The molecular formula of methane is CH4.

Answer (3)

Tuba

May 18, 2014

Calculate the frequency and energy of a photon of radiation having wavelength 3000 Ao.

This answer has an image. Please click on the question to read more.

Answer (2)

Tushara

May 1, 2014

Pls

Answer.

No.of waves = circumference of electron orbit / wave length

Answer (2)

Tushara

May 1, 2014

Pls

For 1st line in Balmer series n1 =2,n2=3
1/λ1= 109678[ 1/n12 -1/n22  ]
=109678[1/...

Answer (1)

Dinesh

Aug 10, 2014

WHAT IS RADIAL NODE AND ANGULAR NODE? DEFINE AND DIFFRENTIATE?

A node is a point where the electron probability is zero. 
For a given orbital there are two types of nodes.
1) Radial node  2) Angular node
Radial node is also called a...

Answer (2)

Hrushikesh

Sep 18, 2015

Write any four postulates of daltons atomic theory

John Dalton, a British school teacher, published his ...

Answer (3)

Ambati

May 3, 2014

Maximum number of electrons in a sub shell with l=3& n=4 is;

In this question l=3 means the sub shell is f & n=4 means it is present in 4th orbit.
Finally it is a 4f sub shell.
The no of orbital in f sub shell =2...

Answer (1)

Sukirtha

Aug 17, 2014

a bulb emits light of wavelength 4500Å.The bulb is rated as 150 watt and 8% of the energy is emitted as light.How many photons are emitted by the bulb per second?

Ans:  Each photon has energy of  hν

Answer (1)

Chandra Kant

May 7, 2015

The number of electrons, protons and neutrons in a species are equal to 18 , 16 , 16 respectively. assign the proper symbol to the species . and why please explain it briefly?

As we know that atom...

Answer (1)

Rejitha Krishnan RG

Sep 11, 2014

write the quantam numbers for the last electron in chromium(Z=24)?

The electronic configuration of chromium is 1s2 2s2 2p6 3s2 3p6 4s1 3d5.
The last electron comes in 3d orbital.
Quantum numbers for the last electron in  Cr :
n = 3 ,l= 2, m= +2 , s= +...

Answer (1)

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