Electron Distribution in the Orbits - 2n2 Rule
Shaalaa.com | Electrons in different shells
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 ?
State the number of electrons present in the outermost shell of the atoms of the following elements :(i) Neon
An element has an atomic number 12. How many electrons will be present in the K, L and M energy shells of its atom?
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?