Which equation represents the number of atoms in a body-centered cubic unit cell

Question

Which equation represents the number of atoms in a body-centered cubic unit cell? a. #atoms = 1 + 1/2 (6) + 1/8 (8) b. #atoms = 1/2 (6) + 1/8 (8) c. #atoms = 1/8 (8) d. #atoms = 1/4 e. #atoms = 1 + 1/8 (8) Which of the following properties of water can be attributed to hydrogen bonding? 1. high melting point 2. high heat of vaporization 3 low vapor pressure 4. high surface tension a 1 and 3 b. 2 and 3 c. 2, 3, and 4 d. 1, 3, and 4 e. 1, 2, 3, and 4 Which following statements concerning induced dipole induced dipole forces is are CORRECT! 1. In general, induced dipole/induced dipole interactions decrease as the size of a molecule increases. 2. Induced dipole/induced dipole forces are the attractive forces in molecular solids consisting of nonpolar molecules. 3. Induced dipole induced dipole forces exist in both polar and nonpolar molecular solids. a. 1 only b. 2 only c. 3 only d. 2 and 3 c. 1, 2. and 3

Explanation / Answer

16)

For body centric lattice,

There are 8 atoms at corners with contribution of 1/8

So, (1/8)*8 should be there

There is 1 atoms at corners with contribution of 1

So, 1 should be there

Answer: e

#atoms = 1 + 1/8 * (8)

17)

All the properties can be attributed to hydrogen bonding

Hydrogen bonding is a strong bond

Answer: e.

1,2,3and 4

I am allowed to answer only 1 question at a time

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