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प्रश्न
Name an element which has the same number of electrons in its first and second shell.
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उत्तर
Beryllium
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संबंधित प्रश्न
Write the distribution of electrons in carbon and sodium atoms?
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?
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?
Give scientific reason.
Atomic mass number is a whole number.
Draw a neat labelled diagram.
Diagramatic sketch of electronic configuration of Argon (Atomic number 18)
Mention the basic tendency of an atom which makes it combine with other atoms
Define the term of the electron.
Give a reason for the following:
Helium is chemical extremely unreactive.
The electronic configuration of ‘Cl’ is ______.
