CHY 102-588 g of an alkali metal undergoes complete reaction with the amount of gaseous

1.588 g of an alkali metal undergoes complete reaction with the amount of gaseous halogen contained in a 0.500 L flask at 298 K and 755 mm Hg. (You can assume that “complete reaction” means that both reagents are limiting.) During this reaction, 22.83 kJ of heat is released. The product is a binary ionic compound, which crystallizes in a unit cell in which anions form a face-centered cubic arrangement and cations are centered along each edge between anions, plus an extra cation in the middle of the cube.(a) What is the identity of the alkali metal?(b) Sketch the unit cell, labeling all ions. How many nearest neighbours does each cation have? How many nearest neighbours does each anion have? Are the anions in contact with one another? Are the cations in contact with one another?(c) The edge length of the unit cell is determined to be 535 pm. Calculate the radius of the halide ion, and determine which halide it is.Radii of cations & anions (pm)Li+ Na+ K+ Rb+ Cs+ F- Cl- Br- I-76 102 136 152 167 133 181 196 220(d) Calculate the density of the compound in g cm-3. Hint: use your diagram from part b!(e) Write a thermochemical reaction showing the standard heat of formation of this alkali metal halide.