$(I)\, SP_4 \,\,\,(II)\, XeO_4 \,\,\,(Ill) \,XeF_4 \,\,\,(IV)\, ICl^-_4$
$PH _{3}, B _{2} H _{6}, CCl _{4}, NH _{3}, LiH$ અને $BCl _{3}$.