Name: Electronic Configuration of Elements
Uploaded: 2019-07-19
Duration: 6 min 6 s
Description: The number of protons in an atom is called its atomic number, represented by ‘Z’, while the sum of its protons and neutrons is called its mass number, given...

Question

Explain the following.

Diagonal relationship.

Accepted Answer

A diagonal relationship is said to exist between certain pairs of diagonally adjacent elements in the second and third periods of the periodic table. Diagonal relationships occur because of the directions in the trends of various properties as you move across or down the periodic table. Many of the chemical properties of an element are related to the size of the atom. These pairs (lithium ( $Li$ ) and magnesium ( $Mg$ ), beryllium ( $Be$ ) and aluminium ( $Al$ ), boron ( $B$ ) and silicon ( $Si$ ) etc.) exhibit similar properties. For example, boron and silicon are both semiconductors, forming halides that are hydrolyzed in water and have acidic oxides. A diagonal relationship is said to exist between certain pairs of diagonally adjacent elements in the second and third periods (first 20 elements) of the periodic table.

Explain the following.

Diagonal relationship.

Important Questions on Classification of Elements and Periodicity in Properties

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