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प्रश्न
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 ?
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उत्तर
(a) The atomic number of given element is 13 which is defined by the number of protons in an atom. Thus, there are 13 e-(s) in each atom of the given element because in a neutral atom, number of protons is equal to the number of electrons.
(b) Electronic configuration of given element (2,8,3) is
K = 2; L = 8; M = 3
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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 ?
The atom of an element X has 7 electrons in its M shell.
(a) Write the electronic configuration of element X.
(b) What is the atomic number of element X?
(c) Is it a metal or a non-metal?
(d) What type of ion will be formed by an atom of element X? Write the symbol of the ion formed.
(e) What could element X be?
An atom X has 2, 8, 7 electrons in its shell. It combines with Y having 1 electron in its outermost shell.
Write the formula of the compound formed.
The atom of aluminium is represented by 27Al13. Write down the number of neutrons in the different orbits or shells in one atom of aluminium.
Differentiate between the term Duplet and octet rule.
The correct electronic configuration of potassium is ______.
Write the electronic configuration of K and Cl
For an atom ‘X’, K, L and M shells are completely filled. How many electrons will be present in it?
Explain the electronic configuration of atoms with an illustration.
