Question

20 elements with there mass and atomic no.

Answer 1

3 6.941 Lithium Li 180 1,347 0.53 1817 1 [He] 2s1 5.39
4 9.012 Beryllium Be 1,278 2,970 1.85 1797 2 [He] 2s2 9.32
5 10.811 Boron B 2,300 2,550 2.34 1808 13 [He] 2s2 2p1 8.30
6 12.011 Carbon C 3,500 4,827 2.26 0.09 ancient 14 [He] 2s2 2p2 11.26
7 14.007 Nitrogen N -210 -196 1.25 1772 15 [He] 2s2 2p3 14.53
8 15.999 Oxygen O -218 -183 1.43 46.71 1774 16 [He] 2s2 2p4 13.62
9 18.998 Fluorine F -220 -188 1.70 0.03 1886 17 [He] 2s2 2p5 17.42
10 20.180 Neon Ne -249 -246 0.90 1898 18 [He] 2s2 2p6 21.56
11 22.990 Sodium Na 98 883 0.97 2.75 1807 1 [Ne] 3s1 5.14
12 24.305 Magnesium Mg 639 1,090 1.74 2.08 1755 2 [Ne] 3s2 7.65
13 26.982 Aluminum Al 660 2,467 2.70 8.07 1825 13 [Ne] 3s2 3p1 5.99
14 28.086 Silicon Si 1,410 2,355 2.33 27.69 1824 14 [Ne] 3s2 3p2 8.15
15 30.974 Phosphorus P 44 280 1.82 0.13 1669 15 [Ne] 3s2 3p3 10.49
16 32.065 Sulfur S 113 445 2.07 0.05 ancient 16 [Ne] 3s2 3p4 10.36
17 35.453 Chlorine Cl -101 -35 3.21 0.