What is the best way to care for lucky bamboo

Use distilled water or bottled water. The chlorine that is in your tap water will cause the tip of the leaves to turn brown. If you must use tap water, you can eliminated most of the chlorine and chemical from the water by letting it sit 24 hours before adding it to the plant.

It was ernest rutherford

The problem here is that according to aufbau principle before 3d orbital 4s subshell comes.after filling 3p orbital with electrons you have 4 electrons left, you place two in 4s with opposite spin and the other two in 3d in any of its two orbitals of total five orbitals with the same spin.