Answer:
A = 65.46 u
Explanation:
Given that,
The composition of zinc is as follows :
Zn-64 = 48.63%
Zn-66 = 27.90%
Zn-67 = 4.10%
Zn-68 = 18.75%
Zn-70 = .62%
We need to find the average atomic mass of the given element. It can be solved as follows :
So, the average atomic mass of zinc is 65.46 u.
First you have a knowledge of bond order which is
B.O=(no. of electrons in bonding orbital - no. of electrons in non-bonding orbital)÷2
Note:
bond strength is directly proportional to bond order.
For oxygen:
B.O=(6-2)/2= 2; after the removal of two electrons(removal occur from non-bonding orbital)
B.O=(6-0)/2= 3 (As B.O increased bond strength increased)
For Nitrogen:
B.O=(6-0)/2= 3; after the removal of two electrons(removal occur from bonding orbital)
B.O=(4-0)/2= 2 (As B.O decreased bond strength decreased)
An oxidation-reduction (redox<span>) </span>reaction<span> is a type of chemical </span>reaction<span> that involves a transfer of electrons between two species. An </span>oxidation<span>-reduction </span>reaction<span> is any chemical </span>reaction<span> in which the </span>oxidation<span> number of a molecule, atom, or ion changes by gaining or losing an electron</span>
The correct answer is A. The equation is not balanced because the number of atoms of each element on the left is not equal to their numbers on the right.
There is 1 chlorine atom on the left. However, there are 5 chlorine atoms on the right.
There is 1 hydrogen atom on the left, but 2 hydrogen atoms on the right.
There are 4 oxygen atoms on the left, but 1 oxygen atom on the right
There is 1 manganese atom on the left and right side of the equation.
There is also 1 potassium atom on the left and right side.
The equation is clearly not balanced.
