Helium (He) is an inert gas. Inert gases exist as a monoatomic. Triatomic oxygen (ozone, O3) is a very reactive allotrope of oxygen that is a pale blue gas at standard temperature and pressure
2, 12, 90, 240, ?, 1260
2, 12, 36, 80, ?, 252
148, ‘?’ , 15 4 , 17 8 , 23 8 , 35 8 , 56 8
2 4 5 19 70...
There are three series given below which are following with the same pattern.
Series I: 1, 12, 38, 193, 1355
Series II: 6, B, C, D, E
...12 10 13 18.5 25.50 ...
14 26 ? 558 4432 44270
...24, 12, 18, ?, 157.5, 708.75
7 26 63 126 215 342
...104 106 110 113 ? 126
