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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
Summarize the rules for writing of distribution of electrons in various shells for the first eighteen elements.
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 an atomic number 12. How many electrons will be present in the K, L and M energy shells of its atom?
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.
The following element is given \[\ce{_3U}\]. State the electronic configuration and state whether it is a metal, non-metal, or inert gas.
The following element is given \[\ce{_9W}\]. State the electronic configuration and state whether it is a metal, non-metal, or inert gas.
The following element is given \[\ce{_18Y}\]. State the electronic configuration and state whether it is a metal, non-metal, or inert gas.
The following element is given \[\ce{_20Z}\]. State the electronic configuration and state whether it is a metal, non-metal, or inert gas.
Explain the electronic configuration of atoms with an illustration.
