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प्रश्न
Give a reason for the following:
The shells surrounding the nucleus of an atom are also called ‘energy levels’.
उत्तर
Shells are called energy levels since while revolving in a shell an electron possesses a certain amount of energy.
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संबंधित प्रश्न
Na+ has completely filled K and L shells. Explain.
What is the maximum number of electrons which can be accommodated in the K 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 ?
Give scientific reason.
Atomic mass number is a whole number.
Draw a neat labelled diagram.
Diagramatic sketch of electronic configurations of magnesium (Atomic number 12)
The electronic configuration magnesium is 2, 8, 2. From this it is understood that the valence shell of magnesium is ______.
Differentiate between the term Duplet and octet rule.
The following element is given \[\ce{_3U}\]. State the electronic configuration and state whether it is a metal, non-metal, or inert gas.
Give a reason for the following:
Helium is chemical extremely unreactive.
