Choose the correct sequence for the geometry of the given molecules Borazone, Borazole, $B_3O_6^{-3}$ , $Fe_2Cl_6$, trimer of $FCN$. [$'P'$ stands for planar and $'NP'$ stands for non-planar]
$NP, NP, NP, P, P$
$P, P, NP, NP, P$
$NP, NP, NP, P, NP$
$NP, P, P, NP, P$
Which of the following is correct ?
The most abundant metal in the earth crust is
Assertion : Atomic radius of gallium is higher than that of aluminium
Reason : The presence of additional $d-$ electron offer poor screening effect for the outer electrons from increased nuclear charge.
Which one of the following statements is not true regarding diborane ?
The liquid field metal expanding on solidification is