The electron distribution in an aluminium ato | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(C) The atomic number of aluminium $(Al)$ is $13$.According to the Bohr-Bury scheme,the maximum number of electrons that can be accommodated in a shel

Vedclass · Accepted Answer

$2, 8, 3$

Vedclass · Answer

(C) The atomic number of aluminium $(Al)$ is $13$.According to the Bohr-Bury scheme,the maximum number of electrons that can be accommodated in a shell is given by the formula $2n^2$,where $n$ is the orbit number.For the first shell $(n=1)$,the capacity is $2(1)^2 = 2$ electrons.For the second shell $(n=2)$,the capacity is $2(2)^2 = 8$ electrons.For the third shell $(n=3)$,the remaining electrons are placed. Since $13 - 2 - 8 = 3$,the third shell contains $3$ electrons.Thus,the electron distribution is $2, 8, 3$. Therefore,option $(C)$ is correct.

The electron distribution in an aluminium atom is

Similar Questions

The electronic configuration of an element $X$ is $2, 8, 2$.
$(a)$ Find the number of electrons present in the atom of element $X$.
$(b)$ Write the atomic number.
$(c)$ Is this element $X$ a metal or a non-metal?
$(d)$ Find out the valency of the element $X$.

Elements with valency $1$ are

The number of electrons in the outermost '$L$' shell of an atom is $5$.
$(a)$ Write its electronic configuration.
$(b)$ What is its valency and why?

Define valency by taking examples of silicon and oxygen.

The number of valence electrons in $Cl^{-}$ ion are

Vedclass Test Series

Exam Paper Generator

Online Exam Module