SHOW YOUR COMPLETE 23) If potassium has a body centered cubic structure and an atomic radius of 0.280 nm, find thevolume fraction of the unit cell occupied by void spaces. [MW: K = 39]A. 0.52B. 0.32C. 0.74D. 0.68 SAMPLE SOLUTIONTantalum is a rare, hard, blue-gray, lustrous transition metal that is highly corrosion-resistant. It has a density of 16.4 grams per cubic centimeter and a molecular weight of180.948 g/mol. What is the atomic radius of Ta if it adopts the body centered cubic unitstructure.Garen: Tantalum, TaBCC structureP- 16.4 /om?MW 180.948 9/molReg'd: at omic radius (r)So lu :BCC structureA atoms2 atoms# mwVe Na2 atoms (180.948)(10'na)(1 an)-23# Mwmot23 ovans(4.022 x10Yell3. 64 x1DCmP Na16.4 guinsCm0.0366 nm0.0366= 0. 3321 nmLo.9ラ2)0.144 nma

For any unit cell,volume occupied by the atoms per unit cell or packing fraction can becalculated by…

Answered: 23) If potassium has a body centered…

23) If potassium has a body centered cubic structure and an atomic radius of 0.280 nm, find the volume fraction of the unit cell occupied by void spaces. [MW: K = 39] A. 0.52 B. 0.32 C. 0.74 D. 0.68

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

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Question

SHOW YOUR COMPLETE

23) If potassium has a body centered cubic structure and an atomic radius of 0.280 nm, find the
volume fraction of the unit cell occupied by void spaces. [MW: K = 39]
A. 0.52
B. 0.32
C. 0.74
D. 0.68

SAMPLE SOLUTION
Tantalum is a rare, hard, blue-gray, lustrous transition metal that is highly corrosion-
resistant. It has a density of 16.4 grams per cubic centimeter and a molecular weight of
180.948 g/mol. What is the atomic radius of Ta if it adopts the body centered cubic unit
structure.
Garen: Tantalum, Ta
BCC structure
P- 16.4 /om?
MW 180.948 9/mol
Reg'd: at omic radius (r)
So lu :
BCC structure
A atoms
2 atoms
# mw
Ve Na
2 atoms (180.948)
(10'na)
(1 an)
-23
# Mw
mot
23 ovans
(4.022 x10
Yell
3. 64 x1D
Cm
P Na
16.4 guins
Cm
0.0366 nm
0.0366
= 0. 3321 nm
Lo.9ラ2)
0.144 nm
a

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