GATE CY 2026 Question Paper (07-Feb-2026) (Shift 2)

The correct electronic configuration of central metal ion in ferrocene with z-axis passing through the centre of two $C_5{H}_5^{-}$ rings and the metal ion is

The pair of complex ions that exhibits the slowest outer-sphere electron-exchange reaction at 25 ${}^{\circ }$ C is

The structure of $B_4{H}_{10}$ is given below. Its styx number is

For the following reaction,
$2P{b}_3{O}_4(s)\rightleftharpoons 6PbO(s)+O_2(g)$
The correct option showing the number of phases (P), number of components (C) and degrees of freedom (F) is

The correct option for the average value of kinetic energy and the average value of potential energy of a one-dimensional harmonic oscillator with frequency $\nu$ in its ground state is