Advertisements
Advertisements
Question
The atom of aluminium is represented by 27Al13. Write down the number of neutrons in the different orbits or shells in one atom of aluminium.
Solution
27Al13 Ato,ic mass = (P + n) = A
Atomic number 13 = P = e = Z
Number of neutrons = A − Z = 27 − 13 = 14
APPEARS IN
RELATED QUESTIONS
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?
Which shell of an atom can accommodate a maximum of :
(a) 8 electrons ?
(b) 32 electrons ?
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 ?
Which of the following is the correct electronic configuration of sodium?
Give scientific reason.
Atomic mass number is a whole number.
The following element is given \[\ce{_6V}\]. State the electronic configuration and state whether it is a metal, non-metal, or inert gas.
The following element is given \[\ce{_9W}\]. 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.
Total number of electrons that can be accommodated in an orbit is given by __________.
