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# $SF_6$ is more reactive than $TeF_6$.The above statement is

$(a)\;Right\qquad(b)\;Wrong\qquad(c)\;Cannot\;say\qquad(d)\;None$

$SF_6$ is exceptionally stable for steric reasons .So $TeF_6$ is more reactive than $SF_6$
Hence (b) is the correct option.