Question

Why and how 4th period elements arranged in periodic table?

Answer 1

Answer:

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Answer 2

Answer:

Arrangements of elements in 4th period of the periodic table.

Explanation:

• 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.

• In period 4 there are 18 elements which are placed in the following manner:

1. Potassium is an alkali metal.
2. Calcium is an alkaline earth metal.
3. Scandium to zinc are transition metals.
4. Gallium is post-transitional metal.
5. Germanium and Arsenic are metalloids.
6. Selenium and bromine are non-metals.
7. Krypton is a Nobel gas.