1s 2s²2p3s²3p648²30104p5
Which element is this?

How much energy is made when a pice of wood burns. how do you know

Is laundry detergent an acid or a base?

The bond energy for the van der waals bond between two helium atoms is 7.9×10−4ev. assuming that the average kinetic energy of a helium atom is (3/2)kbt, at what temperature is the average kinetic energy equal to the bond energy between two helium atoms