Question

Using the periodic table entry below, match the phrases with their corresponding values.

Answer 1

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Answer 2

atomic number=number of protons=number of electrons.
atomic mass=number of protons+number of neutrons.
1. atomic number=79
2. atomic mass=197
3.number of shells=6
4.number of neutrons=118
5.number of electrons n=3 is 18
6.number of valence electrons=1