In the periodic table elements are arranged by

PHYSICAL SCIENCES

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

A	atomic mass
B	atomic number
C	valence electrons
D	number of isotopes

Explanation:

Detailed explanation-1: -In the modern periodic table, the elements are listed in order of increasing atomic number. The atomic number is the number of protons in the nucleus of an atom.

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