Question

why and how elements are arranged in 4th period

Answer 1

In a 4th period elements are arranged in such a way that first 8 Elements are metal and after 2 elements are metal and metaloid and one is noble gass. Total 18 elements which are arranged in a period which is called long period

Answer 2

Arrangements of elements in $4^{th}$ 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 $4^{th}$ 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.

Learn more about such concept

In fourth period of periodic table how many elements have one or more 4d electrons

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An element belongs to 4th period and group 17 of the periodic table. find

(a) the no. of valence electrons.

(b) is it a metal or non-metal.

(c) electron dot structure of this element with calcium.

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