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Bohr- Sommerfeld Model of an Atom

In the period...

Question

In the periodic table, the elements are arranged in the periods following the

A

Hund’s rule

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B

Pauli's exclusion principle

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C

Aufbau principle

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D

both ‘a’ and ‘b’

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Solution

The correct option is C Aufbau principle
Arrangement of element in modem periodic table is based on electronic configuration (Aufbau principle)

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Similar questions

Q. Which of the following statement(s) about the Modern periodic table is/are incorrect?
(i) The elements in the Modern periodic table are arranged on the basis of their decreasing atomic number.
(ii) The elements in the Modern periodic table are arranged on the basis of their increasing atomic number
(iii) Isotopes are placed in an adjoining group(s) in the periodic table.

Q. How are elements arranged in the periodic table?

Q. Which of the following statement is correct in regard to the classification of elements?

(a) Elements in modern periodic table are arranged on the basis of increasing atomic masses.
(b) Elements in Mendeleev's periodic table are arranged on the basis of increasing atomic numbers.
(c) In modern periodic table, the element nickel of lower atomic mass is kept before the element cobalt of higher atomic mass.
(d) In modern periodic table, the isotopes of chlorine having different atomic masses are kept in the same group.

Q. A _______ in s-block elements exists between adjacent elements which are located in the second and third period of the periodic table.

Q. The electronegativities (according to Pauling) of the elements in Period 3 of the Periodic Table are as follows:

A l [1.5] C l [3.0] M g [1.2] N a [0.9] P [2.1] S [2.5] S i [1.8] .

Arrange the elements in the order in which they occur in Periodic Table from left to right:

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