Advertisements
Advertisements
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 ?
Advertisements
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
APPEARS IN
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?
Which shell of an atom can accommodate a maximum of :
(a) 8 electrons ?
(b) 32 electrons ?
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.
The atom of aluminium is represented by 27Al13. Write down the number of protons in the different orbits or shells in one atom of aluminium.
What is meant by the term orbits
The following element is given \[\ce{_9W}\]. State the electronic configuration and state whether it is a metal, non-metal, or inert gas.
Explain the octet rule for the formation of –
Sodium chloride from a sodium atom and a chlorine atom.
The electronic configuration of an atom is 2,8,3. The valency of the atom is ______.
