How to calculate valency by atomic number and atomic mass number
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How to calculate valency by atomic number and atomic mass number
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Use the periodic table to find the atomic number. For the first example, let’s use carbon. The atomic number is 6, which means 6 protons and 6 electrons.
The inner orbital of electrons has 2 electrons, so the next orbital has 4 (6 – 2 = 4).
The outer orbital, with 4 electrons moving in various ways, circling the nucleus, can create 4 single bonds.
You would say that the valency of carbon is 4.
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