Which one of the following statements is corr | vedclass

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(A, B) In a unit cell,the edge lengths are $a$,$b$,and $c$. The angle between $b$ and $c$ is $\alpha$,between $a$ and $c$ is $\beta$,and between $a$ a

Vedclass · Accepted Answer

$A$ metal $(M)$ crystallizes in $bcc$ lattice. The number of atoms of $M$ per unit cell is $2$.

Vedclass · Answer

(A, B) In a unit cell,the edge lengths are $a$,$b$,and $c$. The angle between $b$ and $c$ is $\alpha$,between $a$ and $c$ is $\beta$,and between $a$ and $b$ is $\gamma$. Thus,option $A$ is correct.In a $bcc$ (body-centered cubic) lattice,the number of atoms per unit cell is $1$ (at center) $+ 8 	imes (1/8)$ (at corners) $= 2$. Thus,option $B$ is also correct.$SiC$ (Silicon carbide) is a covalent network solid,not an ionic solid. Thus,option $C$ is incorrect.For a triclinic lattice,the relationship is $\alpha 
eq \beta 
eq \gamma 
eq 90^{\circ}$. Thus,option $D$ is incorrect.Note: Both $A$ and $B$ are factually correct statements.

List-$I$	List-$II$
$A$. $ABCABC...$ layers	$I$. $F$-centres
$B$. Thermodynamics defects	$II$. $X$-ray diffraction
$C$. $Farbenzenter$	$III$. Vacancy defects
$D$. $Debye-Scherrer$ method	$IV$. Semiconductors
	$V$. Silver

Which one of the following statements is correct?

Similar Questions

Which of the following statement(s) is (are) correct?

The setting of cement is an ....... process.

The halide of a metal $MX$ crystallizes in a $ccp$ structure ($NaCl$ type). If all the atoms situated at one of the tetrad axes are removed,what will be the simplest molecular formula of the halide?

Match the following:
List-$I$ List-$II$
$A$. $ABCABC...$ layers $I$. $F$-centres
$B$. Thermodynamics defects $II$. $X$-ray diffraction
$C$. $Farbenzenter$ $III$. Vacancy defects
$D$. $Debye-Scherrer$ method $IV$. Semiconductors
$V$. Silver

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