6. With the help of the periodic table, fill in the chart below. (12 pts) | Element Symbol | Atomic Number | Mass Number | Number of Protons | Number of Neutrons | Number of Electrons | |---|---|---|---|---|---| | C | | | | | | | | 9 | | | | | | | | 51 | | | 23 | | | | | 25 | | | | | | | | | 19 |
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The mass number is already given as 12. The number of protons is equal to the atomic number, so it is 6. The number of electrons in a neutral atom is equal to the number of protons, so it is also 6. To find the number of neutrons, subtract the atomic number from Show more…
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7. Fill in the chart with information on the following atoms. Element Atomic Mass # of symbol number number protons Si # of # of electrons neutrons 23 51 23 77 115 77 108 47 46 51 61 54 Со 59 24 8 160 80 35
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Fill in the blanks in the following table: $$ \begin{array}{cccc} \hline \text { Symbol } & \text { Atomic number } & \begin{array}{c} \text { Number of } \\ \text { neutrons } \end{array} & \begin{array}{c} \text { Mass } \\ \text { number } \end{array} \\ \hline{ }_{6} \mathrm{C} & & \\ : \mathrm{Am} & & & \\ & 53 & 241 \\ & & \\ & & & 123 \\ & & \\ & & 18 \end{array} $$
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