Class 11 Chemistry: Elements 1 to 30 Master Table
Highly useful for UPMSP Class 11 First Monthly Test Revision. Chromium (24) and Copper (29) are
important exceptions.
Z Element Symbol Mass Configuration Valency
1 Hydrogen H 1.008 1s1 1
2 Helium He 4.002 1s2 0
3 Lithium Li 6.94 [He] 2s1 1
4 Beryllium Be 9.01 [He] 2s2 2
5 Boron B 10.81 [He] 2s2 2p1 3
6 Carbon C 12.01 [He] 2s2 2p2 4
7 Nitrogen N 14.01 [He] 2s2 2p3 3, 5
8 Oxygen O 16.00 [He] 2s2 2p4 2
9 Fluorine F 19.00 [He] 2s2 2p5 1
10 Neon Ne 20.18 [He] 2s2 2p6 0
11 Sodium Na 22.99 [Ne] 3s1 1
12 Magnesium Mg 24.31 [Ne] 3s2 2
13 Aluminum Al 26.98 [Ne] 3s2 3p1 3
14 Silicon Si 28.09 [Ne] 3s2 3p2 4
15 Phosphorus P 30.97 [Ne] 3s2 3p3 3, 5
16 Sulfur S 32.06 [Ne] 3s2 3p4 2, 4, 6
17 Chlorine Cl 35.45 [Ne] 3s2 3p5 1
18 Argon Ar 39.95 [Ne] 3s2 3p6 0
19 Potassium K 39.10 [Ar] 4s1 1
20 Calcium Ca 40.08 [Ar] 4s2 2
21 Scandium Sc 44.96 [Ar] 3d1 4s2 3
22 Titanium Ti 47.87 [Ar] 3d2 4s2 2, 3, 4
23 Vanadium V 50.94 [Ar] 3d3 4s2 2, 3, 4, 5
24 Chromium (*) Cr 52.00 [Ar] 3d5 4s1 (Exception) 2, 3, 6
Highly useful for UPMSP Class 11 First Monthly Test Revision. Chromium (24) and Copper (29) are
important exceptions.
Z Element Symbol Mass Configuration Valency
1 Hydrogen H 1.008 1s1 1
2 Helium He 4.002 1s2 0
3 Lithium Li 6.94 [He] 2s1 1
4 Beryllium Be 9.01 [He] 2s2 2
5 Boron B 10.81 [He] 2s2 2p1 3
6 Carbon C 12.01 [He] 2s2 2p2 4
7 Nitrogen N 14.01 [He] 2s2 2p3 3, 5
8 Oxygen O 16.00 [He] 2s2 2p4 2
9 Fluorine F 19.00 [He] 2s2 2p5 1
10 Neon Ne 20.18 [He] 2s2 2p6 0
11 Sodium Na 22.99 [Ne] 3s1 1
12 Magnesium Mg 24.31 [Ne] 3s2 2
13 Aluminum Al 26.98 [Ne] 3s2 3p1 3
14 Silicon Si 28.09 [Ne] 3s2 3p2 4
15 Phosphorus P 30.97 [Ne] 3s2 3p3 3, 5
16 Sulfur S 32.06 [Ne] 3s2 3p4 2, 4, 6
17 Chlorine Cl 35.45 [Ne] 3s2 3p5 1
18 Argon Ar 39.95 [Ne] 3s2 3p6 0
19 Potassium K 39.10 [Ar] 4s1 1
20 Calcium Ca 40.08 [Ar] 4s2 2
21 Scandium Sc 44.96 [Ar] 3d1 4s2 3
22 Titanium Ti 47.87 [Ar] 3d2 4s2 2, 3, 4
23 Vanadium V 50.94 [Ar] 3d3 4s2 2, 3, 4, 5
24 Chromium (*) Cr 52.00 [Ar] 3d5 4s1 (Exception) 2, 3, 6
