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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?
What is the maximum number of electrons which can be accommodated in the :
(a) innermost shell of an atom?
(b) outermost shell of an atom?
Which shell of an atom can accommodate a maximum of :
(a) 8 electrons ?
(b) 32 electrons ?
Name the shell of an atom which can accommodate a maximum of :
(a) 2 electrons ?
(b) 18 electrons ?
Which of the following is the correct electronic configuration of sodium?
Which of the following represents the correct electron distribution in magnesium ion?
The electronic configuration magnesium is 2, 8, 2. From this it is understood that the valence shell of magnesium is ______.
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 \[\ce{_20Z}\]. State the electronic configuration and state whether it is a metal, non-metal, or inert gas.
