Chemistry - Complete s-block Question with Solution | TestHub

${\left({\mathrm{NH}}_4\right)}_2{\mathrm{BeF}}_4\stackrel{\Delta }{\to }\mathrm{A}$ (gas) +B

$\mathrm{BeO}\left(\mathrm{s}\right)+C\left(s\right)+C{l}_2\left(g\right)\stackrel{\Delta }{\to }D\left(g\right)+E$

Hybridization of the central atom in B involves "x" number of orbitals, and hybridization of the so-called central atom in the dimer of E involves "y" number of orbitals. Then $(x+y)$ is _____