Question

The thired periodic table
starts from​

Answer 1

Answer:

Explanation:

n the modern periodic table, each period starts with the filling of a new principal energy level. Thus, the third period begins with the filling of principal quantum number n=3.

Answer 2

Answer:

In the modern periodic table, each period starts with the filling of a new principal energy level. Thus, the third period begins with the filling of principal quantum number n=3. When n=3,l=0,1,2. But according to Aufbau principle, the electrons are added to different orbitals in order of their increasing energies.



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