Question

In the modern periodic table, the period indicates the value of :
(a) atomic number
(b) atomic mass
(c) principal quantum number
(d) azimuthal quantum number

Answer 1

The periodic table is the tabular arrangement of the chemical elements, organized on the basis of their atomic number  (the number of  protons in the nucleus), electron configurations, and recurring chemical properties.

The value of the principal quantum number (n) for the outermost shell or the valence shell indicates a period in the Modern periodic table.

Answer 2

Answer:

Explanation: C principal quantum no

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