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प्रश्न
The atom of aluminium is represented by 27Al13. Write down the number of electrons in the different orbits or shells in one atom of aluminium.
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उत्तर
27Al13 Ato,ic mass = (P + n) = A
Atomic number 13 = P = e = Z
Number of electrons Z = 13
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संबंधित प्रश्न
What is the maximum number of electrons an M shell of the atom can accommodate?
Name the shell of an atom which can accommodate a maximum of :
(a) 2 electrons ?
(b) 18 electrons ?
An element has atomic number 13 and an atomic mass of 27.
(a) How many electrons are there in each atom of the element ?
(b) How are these electrons distributed in the various energy levels ?
Give scientific reason.
Atomic mass number is a whole number.
The atom of aluminium is represented by 27Al13. Write down the number of the arrangement of electrons in the different orbits or shells in one atom of aluminium.
Explain the arrangement and distribution of electrons in the various shells with reference to an atom in general and to an atom of potassium ‘3919K’ with special reference to the 2n2 rule.
Differentiate between the term Stable and unstable electronic configuration.
Give a reason for the following:
The shells surrounding the nucleus of an atom are also called ‘energy levels’.
Atomic numbers of A and B are 18 and 19 respectively. What is the electronic configuration of A and B?
How will you define the term ‘electronic configuration’?
