Describe two patterns in the periodic table?

Patter 1: Ionization Energy Decreases going down a group

Pattern 2: Ions tend to gain/lose the least amount of electrons

Take oxygen, for example.  Oxygen has 8 electrons. To become like a noble gas it could either gain two to become  like neon or it could lose six to become like helium. So what will oxygen do—gain two  or lose six? As a general rule, atoms will gain or lose the fewest number of electrons  possible.

Explanation:

hloride, what is the mass of calcium in

explanation:

1. they vary with a higher number because boiling is way hotter than melting