Question

How do periodicity of properties dependent upon number of protons in san atom

Answer 1

As an element is placed in a Periodic Table it gets is atomic number from from it and atomic number is equal to the number of protons.
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Answer 2

Answer: when we move from left to right in a periodic table,number of protons increases in nucleus. Hence nucleur charge will also increase and when nucleur charge changes the properties of elements also change

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