GATE CY 2021 Question Paper (06-Feb-2021) (Shift 1)

The geometry and the number of unpaired electrons in tetrakis(1- norbornyl)Co



respectively, are:

The yellow color of an aqueous solution of K₂CrO₄ changes to red-orange upon the addition of a few drops of HCl. The red-orange complex, the oxidation state of its central element(s), and the origin of its color, respectively, are:

The shapes of the compounds ClF₃, XeOF₂, N₃⁻ and XeO₃F₂ respectively, are:

The metal borides that contain isolated boron atoms are:

The major product formed in the following reaction



$\stackrel{NaOEt}{\to }$

is: