Answer:
0.00172 M
Explanation:
According to the Lambert's Beer law:-
Where, A is the absorbance
l is the path length
is the molar absorptivity
c is the concentration.
If a graph is plotted between the concentration and absorbance, then the slope is:- . So,
<u>0.00172 is the molar concentration of in the unknown solution.</u>
The answer is transition metals.
D. 2:5
It has 5 valency electrons
C