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Page 1

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1.

Page 2

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Write the symbols, including Mass No. and Atomic No. for the atoms containing
the fundamental particles below:

No. of Protons No. of Neutrons Symbol
11 12 1123Na
7 7
56 81
19 20
19 21
18 22


2. Complete the table

No. of No. of
No. of Protons Symbol
Neutrons…

Page 3

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56 81 56137Ba
19 20 1939K
19 21 1940K (isotope)
18 22 1840Ar




No. of No. of
No. of Protons Symbol
Neutrons Electrons
29 36 29 2965Cu
12 14 12 1226Mg
16 17 16 1633S
12 13 10 1225Mg 2+
28 32 28 2860Ni
17 20 18 1737Cl -

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