dfgdsh3285 dfgdsh3285 26-03-2024 Chemistry contestada Total number of species among following, in which bond angle is equal to or less than 109°28 and also they act as lewis base :NH₃, NMe₃,O(SiH₃)₂, lCl₄, XeO₃,BF₂Cl,Si₄, AsH₃,So₂F₂