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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?

4d, 4f, 5s, 5p

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उत्तर

Orbitals n n + l
4d 4 6
4f 4 7
5s 5 5
5p 5 6

The lowest energy orbital is 5s

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

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

संबंधित प्रश्‍न

Give the names of quantum numbers.


Define the term Electronic configuration.


State the order of filling atomic orbitals following Aufbau principle.


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

n = 4, l = 2


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

n = 3, l = 2


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

Lithium (Z = 3)


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)


Indicate the number of unpaired electrons in \[\ce{Si}\] (Z = 14).


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 ______.


Nickel atom can lose two electrons to form \[\ce{Ni^{2+}}\] ion. The atomic number of nickel is 28. From which orbital will nickel lose two electrons.


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, arrange the following orbitals in the increasing order of energy.

4s, 3s, 3p, 4d


Match the following

(i) Photon (a) Value is 4 for N shell
(ii) Electron (b) Probability density
(iii) ψ2 (c) Always positive value
(iv) Principal quantum number n (d) Exhibits both momentum and wavelength

Which of the following is not the permissible arrangement of electrons in an atom?


In the case of R, S configuration the group having the highest priority is ______.


Which one of the following laws will represent the pairing of electrons in a subshell after each orbital is filled with one electron?


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