Two elements X an Y have atomic number 11 and 16 respectively. (i) Write the electronic configuration of both. (ii) Which type of bond will they form? (iii) Write the formula of the compound formed by their combination (in terms of X and Y)
Answers
Given:
- The atom number of element X is 11.
- The atomic number of element Y is 16.
To find:
(i) Write the electronic configuration of both.
(ii) Which type of bond will they form?
(iii) Write the formula of the compound formed by their combination (in terms of X and Y)
Explanation:
(i)
For X :
Atomic number(z) = 11.
We know that,
Atomic number of an element = Number of element of the element.
∴ The number of electron of X = 11.
By applying Bohr's and Bury's scheme of electronic configuration or by using the formula 2n²(Here, 'n' is the quantum or orbital number of the atom) we get the electronic configuration of X as_
X=(2,8,1)
( Since, at the outermost shell of X has 1 electron which is less than 4 so, element X is a metal.)
For Y:
Atomic number(z) = 16.
We know that,
Atomic number of an element = Number of element of the element.
∴ The number of electron of Y = 16.
By applying Bohr's and Bury's scheme of electronic configuration or by using the formula 2n²(Here, 'n' is the quantum or orbital number of the atom) we get the electronic configuration of Y as_
Y=(2,8,6)
( Since, at the outermost shell of Y has 6 electrons which is less than 8 and more than so, element Y is a non-metal.)
(ii)
Since element X is metal and element Y is a non-metal so, electrovalent bond or ionic bond will be formed.
As one of the element here is metal and the other is non-metal so, they will never mutually share their electrons. As element X is a metal so to be stabled it will reduce electrons from its last shell. Similarly, element Y is a non-metal so, to be stabled it will gain electrons to compete its octate. Hence, there will be a formation of charge so, ionic or electrovalent bond will be formed.
(iii)
Since, there is 1 electron at the outermost orbit of element X. So, to be stabled element X will lose 1 electron.
Similarly, there is 6 electrons at the outermost shell of element Y. So, to be stabled element Y will gain 2 electrons.
Hence, one atom of Y will react with two atoms of X and the compound will be formed.
So, the formula of the compound formed by the combination of element X and element Y is _ X²Y.
Answer:
(i) X =(2,8,1)
Y = (2,8,6)
(ii) Ionic or electrovalent bond will be formed.
(iii) X²Y.
Answer:
x=2,8,1 and y=2,8,6
ionic bond and covalent bond
x²y