List the symbols and atomic numbers of first 20 elements
sonuaidalpur:
1 hydrogen two helium 3 Lithium for beryllium 5 Boron six carbon 8 oxygen 9 fluorine 10 neon 11 sodium 12 magnesium 13 ammonium 14 silicon 15 phosphorus 16 sulphur 17 chlorine 18 organ 19 potassium xx calcium
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1 H Hydrogen
2 He Helium
3 Li Lithium
4 Be Beryllium
5 B Boron
6 C Carbon
7 N Nitrogen
8 O Oxygen
9 F Fluorine
10 Ne Neon
11 Na Sodium
12 Mg Magnesium
13 Al Aluminum
14 Si Silicon
15 P Phosphorus
16 S Sulfur
17 Cl Chlorine
18 Ar Argon
19 K Potassium
20 Ca Calcium
2 He Helium
3 Li Lithium
4 Be Beryllium
5 B Boron
6 C Carbon
7 N Nitrogen
8 O Oxygen
9 F Fluorine
10 Ne Neon
11 Na Sodium
12 Mg Magnesium
13 Al Aluminum
14 Si Silicon
15 P Phosphorus
16 S Sulfur
17 Cl Chlorine
18 Ar Argon
19 K Potassium
20 Ca Calcium
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Answered by
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ANSWER
FIRST 20 ELEMENTS FORM PD
H-1
He-2
Li-3
Be-4
B-5
C-6
N-7
O-8
F-9
Ne-10
Na-11
Mg-12
Al-13
Si-14
P-15
s-16
Cl-17
Ar-18
k-19
Ca-20
I HOPE THIS INFO HELPS U ☺️☺️☺️☺️
FIRST 20 ELEMENTS FORM PD
H-1
He-2
Li-3
Be-4
B-5
C-6
N-7
O-8
F-9
Ne-10
Na-11
Mg-12
Al-13
Si-14
P-15
s-16
Cl-17
Ar-18
k-19
Ca-20
I HOPE THIS INFO HELPS U ☺️☺️☺️☺️
Answered by
1
✌️✌️Hallo friend ✌️✌️
Answer✍️✍️✍️
Hydrogen
Helium
Lithium
Thank ❤️❤️
Answer✍️✍️✍️
Hydrogen
Helium
Lithium
Thank ❤️❤️
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