Question: From the Periodic Table, find (a) The atomic number (b) The atomic mass for each element. 1. Na (sodium) 2. Fe (iron) 3. Pb (lead)

From the Periodic Table, find

(a) The atomic number

(b) The atomic mass for each element.

1. Na (sodium)

2. Fe (iron)

3. Pb (lead)

4. Cl (chlorine)

5. The nucleus of a certain element contains 6 protons and 8 neutrons. Write its chemical symbol.

6. The nucleus of a certain element contains 92 protons and 142 neutrons. Write its chemical symbol.


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