Chemistry - Complete Pblock- Question with Solution | TestHub

$\mathrm{N}{\mathrm{a}}_2[{\mathrm{B}}_4{\mathrm{O}}_5\left(\mathrm{O}\mathrm{H}{)}_4\right].8{\mathrm{H}}_2\mathrm{O}$

$2\mathrm{N}\mathrm{a}\mathrm{B}{\mathrm{O}}_2.\mathrm{N}{\mathrm{a}}_2{\mathrm{B}}_2{\mathrm{O}}_3.10{\mathrm{H}}_2\mathrm{O}$

$\mathrm{N}{\mathrm{a}}_2[{\mathrm{B}}_4\left({\mathrm{H}}_2\mathrm{O}{)}_4{\mathrm{O}}_7\right].6{\mathrm{H}}_2\mathrm{O}$

All of the above