Which of the following rules must be followed | vedclass

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(A) An alloy is a solid solution of two or more metals or a metal and a non-metal. For the formation of substitutional solid solutions (alloys),the fo

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The difference in atomic radii should not be more than $15\%$.

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(A) An alloy is a solid solution of two or more metals or a metal and a non-metal. For the formation of substitutional solid solutions (alloys),the following conditions are generally required:$1$. The atomic radii of the components should not differ by more than $15\%$.$2$. The crystal structures of the components should be similar.$3$. The valence shell electronic configurations should be similar.$4$. The electronegativity difference should be small.Therefore,the correct rule is that the difference in atomic radii should not be more than $15\%$.

column-$I$ $(\text{Property})$	column-$II$ $(\text{Metal})$
$i$. An element which can show $+8$ oxidation state	$a$. $Mn$
$ii$. $3d$ series element that can show upto $+7$ oxidation state	$b$. $Cr$
$iii$. $3d$ series element with highest melting point	$c$. $Os$

Which of the following rules must be followed to form an alloy?

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