1. Write 1 to 30 elements symbols and atomic numbers 3 times.
Answers
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Answer:
The atomic number or nuclear charge number of a chemical element is the charge number of an atomic nucleus. For ordinary nuclei, this is equal to the proton number or the number of protons found in the nucleus for every atom of that element.
Explanation:
Atomic
Number Symbol Name Atomic Mass (AMU, g/mol)
1 H Hydrogen 1.00797
2 He Helium 4.00260
3 Li Lithium 6.941
4 Be Beryllium 9.01218
5 B Boron 10.81
6 C Carbon 12.011
7 N Nitrogen 14.0067
8 O Oxygen 15.9994
9 F Fluorine 18.998403
10 Ne Neon 20.179
11 Na Sodium 22.98977
12 Mg Magnesium 24.305
13 Al Aluminum 26.98154
14 Si Silicon 28.0855
15 P Phosphorus 30.97376
16 S Sulfur 32.06
17 Cl Chlorine 35.453
18 Ar Argon 39.948
19 K Potassium 39.0983
20 Ca Calcium 40.08
21 Sc Scandium 44.9559
22 Ti Titanium 47.90
23 V Vanadium 50.9415
24 Cr Chromium 51.996
25 Mn Manganese 54.9380
26 Fe Iron 55.847
27 Co Cobalt 58.9332
28 Ni Nickel 58.70
29 Cu Copper 63.546
30 Zn Zinc 65.38
The atomic number or nuclear charge number of a chemical element is the charge number of an atomic nucleus. For ordinary nuclei, this is equal to the proton number or the number of protons found in the nucleus for every atom of that element.
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