Gold (Au) should have an electron notation that ends in 6s24f145d9. To become more stable, the electrons in reality rearrange th
1 answer:
The electrons rearrange themselves to ensure that orbitals at lower energy levels are first filled before those at higher energy levels.
<h3>Electronic configuration</h3>One of the rules of electronic configuration states that lower energy level orbitals are first filled with electrons before higher energy level orbitals.
Thus, the electrons in Gold will rearrange themselves to obey the above rule in order to achieve more stability.
Hence, the electronic configuration becomes:
More on electronic configuration can be found here: brainly.com/question/14283892
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Explanation:
According to the Henderson-Hasselbalch equation, the relation between pH and is as follows.
pH =
where, pH = 7.4 and = 7.21
As here, we can use the nearest to the desired pH.
So, 7.4 = 7.21 +
0.19 =
= 1.55
1 mM phosphate buffer means +
= 1 mM
Therefore, the two equations will be as follows.
= 1.55 ............. (1)
+
= 1 mM ........... (2)
Now, putting the value of from equation (1) into equation (2) as follows.
1.55 = 1 mM
2.55 = 1 mM
= 0.392 mM
Putting the value of in equation (1) we get the following.
0.392 mM + = 1 mM
= (1 - 0.392) mM
= 0.608 mM
Thus, we can conclude that concentration of the acid must be 0.608 mM.