AP EAMCET Engineering 17 Sep 2020 Shift 2 Paper

In XeF4,BF4− and SiF4 only one type of covalent bonds are present, which are Xe−F,B−F and Si-F respectively.
In C2H4, two types of covalent bonds are present, which are C=C and C−H. which are not equal for any property.