I believe its a covalent bond?
Answer :
- <u>Part A :</u> The given unbalanced redox reaction is,
Now we have to balance the given redox reaction in acidic medium by half reaction method.
1st half reaction :
2nd half reaction :
For net balanced reaction, 1st half reaction is multiplying by 8 and 2nd half reaction is multiplying by 5
The net balanced redox reaction is,
- <u>Part B :</u> The given unbalanced redox reaction is,
Now we have to balance the given redox reaction in basic medium by half reaction method.
1st half reaction :
2nd half reaction :
For net balanced reaction, 1st half reaction is multiplying by 2.
The net balanced redox reaction is,
<span>[He] 2s</span>¹ or 1s² 2s¹ is lithium's electron configuration
Answer:
b. primitive cubic < body-centered cubic < face-centered cubic
Explanation:
The coordination number is defined as <em>the number of atoms (or ions) surrounding an atom (or ion) in a crystal lattice</em>. Its value gives us a measure of how tightly the spheres are packed together. The larger the coordination number, the closer the spheres are to each other.
- In the <u>primitive cubic</u>, each sphere is in contact with 6 spheres, so its <u>coordination number is 6</u>.
- In the <u>body-centered cubic</u>, each sphere is in contact with 8 spheres, so its <u>coordination number is 12</u>.
- In the <u>face-centered cubic</u>, each sphere is in contact with 12 spheres, so its <u>coordination number is 12</u>.
Therefore, the increasing order in density is the primitive cubic first, then the body-centered cubic, and finally the face-centered cubic.
<span>Since Astatine is in period 7 and Te is in period 6, I'm going with At because it has 7 energy levels.</span>