The HNH angle value is higher than HPH, HAsH and HSbH angles. Why?

C-O-C bond angle in ethers is higher than H-O-H bond angle in water through O is sp^3 -hybridisedin both the cases.

Bond angle in (PH_4)^+ is higher than that in PH_3 . Why?

Fill in the blanks with acute,obtuse,right or straight: An angle whose measure is greater than that of a right angle is ........ .

Why the melting and boiling points of alkynes are higher than alkenes and alkanes?

Two angles of a triangle are equal and the third angle is greater than each of those angles by 30 degree, determine the angles of the triangle.

In one angle of a prallelogram is 24^@ less than the smallest angles, then the measure is largest angle of the parallelogram is