Lonization Energy decreases as you go down a family (group or column). Explain why this pattern occurs with force of attraction and atomic structure.

Which element would mostly likely have an electron affinity measuring closest to zero

The atomic number, or number, is the described as the number of in the nucleus of an chemical element.

If 15 drops of ethanol from a medical dropper weight 0.60g, how many drops does it takes from a dropper to dispense 1.0ml of ethanol? the density of ethanol is 0.80g/ml