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The arrangement of orbitals on the basis of energy is based upon their (n + l) value. Lower the value of (n + l), lower is the energy. For orbitals having same values of (n + l), the orbital with

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प्रश्न

The arrangement of orbitals on the basis of energy is based upon their (n + l) value. Lower the value of (n + l), lower is the energy. For orbitals having same values of (n + l), the orbital with lower value of n will have lower energy.

Based upon the above information, solve the questions given below:

Which of the following orbitals has the lowest energy?

5p, 5d, 5f, 6s, 6p

अति संक्षिप्त उत्तर
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उत्तर

Orbitals n n + l
5p 5 6
5d 5 7
5f 5 8
6s 6 6
6p 6 7

The highest energy orbital is 5f

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अध्याय 2: Structure of Atom - Multiple Choice Questions (Type - I) [पृष्ठ १९]

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एनसीईआरटी एक्झांप्लर Chemistry Exemplar [English] Class 11
अध्याय 2 Structure of Atom
Multiple Choice Questions (Type - I) | Q 27.(ii).(b) | पृष्ठ १९

संबंधित प्रश्न

Using s, p, d notations, describe the orbital with the following quantum numbers n = 4; l = 2.


Choose the correct option.

“No two electrons in the same atoms can have identical set of four quantum numbers”. This statement is known as -


Write orbital notations for the electron in orbitals with the following quantum numbers.

n = 4, l = 2


Write condensed orbital notation of electronic configuration of the following element:

Carbon (Z = 6)


Write condensed orbital notation of electronic configuration of the following element:

Silicon (Z = 14)


Write condensed orbital notation of electronic configuration of the following element:

Chlorine (Z = 17)


Write condensed orbital notation of electronic configuration of the following element:

Calcium (Z = 20)


Explain in brief, the significance of the azimuthal quantum number.


The electronic configuration of oxygen is written as 1s2 2s2 \[\ce{2p^2_{{x}}}\] \[\ce{2p^1_{{y}}}\] \[\ce{2p^1_{{z}}}\] and not as 1s2 2s2 \[\ce{2p^2_{{x}}}\], \[\ce{2p^2_{{y}}}\] \[\ce{2p^0_{{z}}}\], Explain.


Write a note on ‘Principal Quantum number.


Indicate the number of unpaired electron in:

Cr (Z = 24)


The three electrons have the following set of quantum numbers:

X = 6, 1, −1, `+1/2`

Y = 6, 0, 0, `+1/2`

Z = 5, 1, 0, `+1/2`

Identify the CORRECT statement.


Which of the following has a greater number of electrons than neutrons?

(Mass number of Mg, C, O and Na is 24, 12, 16 and 23 respectively).


Which of the following options does not represent ground state electronic configuration of an atom?


Total number of orbitals associated with third shell will be ______.


Which of the following sets of quantum numbers are correct?

  `n` `l` `m_l`
(i) 1 1 +2
(ii) 2 1 +1
(iii) 3 2 –2
(iv) 3 4 –2

Calculate the total number of angular nodes and radial nodes present in 3p orbital.


What is the difference between the terms orbit and orbital?


Choose the INCORRECT statement


Which of the following element do not follow Aufbau principle?


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