vinod

What is the valency of selenium in five membered ring system?

when 12ohm resistance joint in triangle caculate 1arm resistance

Explain loss of kinetic energy due to oblique impact...

Two ships A&B leave port at same time the ship A is north-west at 32km/hr & ship B is 40degree south of west at 24 m/hr determine 1)the speed of ship B relative to ship A 2)At what time they will be 150km apart

Thank you Sir, but if it is five membered ring system having 1-Se, 2-N, 3-C=O, 4-CH2, 5-CH2 then what will be the valency of Se in this type of ring system?

none of this

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