BCC संरचना की परमाणु त्रिज्या को ______ द्वारा दिया जाता है।

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  1. \(\frac{{a\sqrt 3 }}{4}\)
  2. \(\frac{{4a}}{{\sqrt 3 }}\)
  3. \(\frac{a}{{2\sqrt 2 }}\)
  4. \(a{\rm{ }}/{\rm{ }}2\)

Answer (Detailed Solution Below)

Option 1 : \(\frac{{a\sqrt 3 }}{4}\)

Detailed Solution

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व्याख्या

BCC: BCC का मतलब अन्तः - केंद्रित घनीय है। एक इकाई सेल में केंद्र पर एक परमाणु, प्रत्येक कोने पर 1 परमाणु होता है। क्रिस्टल संरचना का उपयोग केवल भंगुर सामग्रियों के लिए किया जाता है। 

F1 Ashik Madhu 14.08.20 D27

AC = इकाई कोशिका का निकाय विकर्ण

a = इकाई सेल का पक्ष

\(a\sqrt 3 = 4r\)

\(r = \frac{{\sqrt 3 a}}{4}\)

26 June 1

विशेषताएँ

BCC

FCC

HCP

a से r संबंध

\(a = \frac{{4r}}{{\sqrt 3 }}\)

a=2r√2

\(a = 2r\)

परमाणुओं की औसत संख्या

2

4

6

समन्वय संख्या

8

12

12

APF

0.68

0.74

0.74

उदाहरण

Na, K, V, Mo, Ta, W

Ca, Ni, Cu, Ag, Pt, Au, Pb, Al

Be, Mg, Zn, Cd, Te

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