Answer:
ionization energy is the amount of energy it takes to remove an atoms most loosely bound electron. going from the top of a group to the bottom, ionization energy decreases, as it is getting easier and easier to remove the outermost electron. As you move down a group, you add principle energy levels, which causes shielding. this means that there is decreased communication between the outermost electron and the nucleus, making it easier to remove the outer electron.
Is there an attachment because it depends on the element.
Answer:
For the control experiment:
of aqueous solution of erioglaucine has absorbance of ![0.035 M\\](https://tex.z-dn.net/?f=0.035%20M%5C%5C)
From Lambert-Beer's law we know:
![Absorbance = e\cdot c \cdot l\\](https://tex.z-dn.net/?f=Absorbance%20%3D%20e%5Ccdot%20c%20%5Ccdot%20l%5C%5C)
Here; e is the molar absorptivity coefficient of erioglaucine
l = length of cuvette in which the solution is taken = ![1 cm](https://tex.z-dn.net/?f=1%20cm)
A sorbance by the erioglaucine = total absorbance - absorbance by distilled ![water = 0.331-0.019 = 0.312](https://tex.z-dn.net/?f=water%20%3D%200.331-0.019%20%3D%200.312)
So; by putting the values in the above equation; we get:
![0.312 = 0.0552 M \cdot e\cdot~1cm\\](https://tex.z-dn.net/?f=0.312%20%3D%200.0552%20M%20%5Ccdot%20e%5Ccdot~1cm%5C%5C)
So; ![e = \frac{0.331}{0.0552} M^{-1}cm^{-1}= 5.65 M^{-1}cm^{-1}](https://tex.z-dn.net/?f=e%20%3D%20%5Cfrac%7B0.331%7D%7B0.0552%7D%20M%5E%7B-1%7Dcm%5E%7B-1%7D%3D%205.65%20M%5E%7B-1%7Dcm%5E%7B-1%7D)
The molar absorptivity coefficient of erioglaucine is ![5.65 M^{-1}cm^{-1}\\](https://tex.z-dn.net/?f=5.65%20M%5E%7B-1%7Dcm%5E%7B-1%7D%5C%5C)
The absorbance of erioglaucine in distilled water (contaminated with metal ions) is: ![0 .217](https://tex.z-dn.net/?f=0%20.217)
The absorbance of distilled water is ![0.019](https://tex.z-dn.net/?f=0.019)
So; absorbance of erioglaucine itself is : ![0.217-0.019 = 0.198](https://tex.z-dn.net/?f=0.217-0.019%20%3D%200.198)
Again using Lambert Beer law; we get:
![A= e\cdot c\cdot l](https://tex.z-dn.net/?f=A%3D%20e%5Ccdot%20c%5Ccdot%20l)
![( c = concentrartion)](https://tex.z-dn.net/?f=%28%20c%20%3D%20concentrartion%29)
c = 0.198/5.65 M = 0.035 M
The concentration of the erioglaucine is ![0.035 M\\](https://tex.z-dn.net/?f=0.035%20M%5C%5C)
Explanation:
Answer:
A. Mg(OH)2
Explanation:
all oxides are insoluble except those of Group IA metals. most sulfides S2- are insoluble, with the exceptions of Group I, II (slightly soluble) metals and ammonium - NH4+