You have one of pure elemental metals (made of identical atoms; e. g. Ni, Cr, Pt, Al, Cu, Ta, Na, etc.). It has a Cubic (a=b=c, α=β=γ=90o ) crystal system. From the accompanying XRD data (taken with Cu K-α radiation λ = 1.5418Å),

a. Determine the crystal structure (i. e., choose from Simple Cubic, Base-centered Cubic, Body-centered Cubic, Face-centered Cubic, etc.) of the material.
b. Index each peak (i. e., assign hkl on each peak).
c. Calculate the lattice parameter, a. 2θ: 43.16, 50.30, 73.99, 89.85, 95.03, 116.92, 136.59

the lattice parameter = 3.61A

Explanation:

check the attachment below for more explanation and answers

the best answer is d because the strong cohesion is caused by the ability of water molecules to undergo hydrogen bonding.

a is incorrect because when water solidifies, it becomes   ice, which expands and occupies a bigger volume for the same mass of water in its liquid state.

b is incorrect because water has high surface tension. besides bonding to itself it hydrogen bonds to other molecules at the top decreasing possibility for breaking of attractive forces.

c is incorrect because the water molecule has oxygen which is highly electronegative and so pulls the electron pair towards itself creating a dipole moment, making the molecule polar.

e is incorrect because water has strong adhesion, ability to stick to other molecules such as glass because of this molecules having stronger hydrogen bonding than water.

2b2t

explanation:

2b2t