Question

why do 'd' block elements show similarities in properties not only in groups but also in periods? d​

Answer 1

Explanation:

All elements in a row have the same number of electron shells. Each next element in a period has one more proton and is less metallic than its predecessor. Arranged this way, groups of elements in the same column have similar chemical and physical properties, reflecting the periodic law.

Elements in the same period have the same number of electron shells; moving across a period (so progressing from group to group), elements gain electrons and protons and become less metallic. This arrangement reflects the periodic recurrence of similar properties as the atomic number increases.

Answer 2

d-block elements show similarities in properties not only in groups but also in periods because:

• There is a horizontal similarity of properties in the d-block element. The element's outermost electronic configuration determines the properties of the element. The outermost electronic configuration for a d-block element is ns2, which is the same for all, but the penultimate electronic configuration changes. It displays horizontal similarity for the same electronic configuration.
• The number of electron shells is the same for every element in a row. The next element in a period is less metallic than the one before it and has one more proton. The periodic law is illustrated by the similar chemical and physical properties of groups of elements arranged in the same column.

To learn more:

https://brainly.in/textbook-solutions/q-ionisation-potential-values-d-block-elements-compared

https://brainly.in/question/11138564

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