Question

How are elements arranged in 4th period?​

Answer 1

Answer:

Arrangements of elements in period of the periodic table. The reason for the arrangement of elements in the period is based upon the atomic number. In all periods, including the elements are arranged according to the atomic number in increasing order.

Explanation:

Answer 2

Answer:

The fourth period corresponding to n = 4 involves the filling of one 4s and three 4p orbitals ( 4d and 4f orbitals are higher in energy than 5s orbitals and are filled later ) In between 4s and 4p orbitals , five 3d orbitals are filled which have energies in between these orbitals .

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