Question

The period in which s-block, p-block and d-block elements are present.

Answer 1

Answer:

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The elements of group 3 ,4 ,5 ,6 ,7 ,8 ,9 ,10 ,11 and 12 belonging to 4th 5th 6th and 7th period in which the last electron enters the d orbital of their respective penultimate shells are called d Block Elements.

Explanation:

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Answer 2

The period in which s-block, p-block and d-block elements are present is 4,5 and 6.

• The modern periodic table contains four blocks which are s, p, d and f blocks.
• S block contains alkali and alkaline earth metal, p block contains metal, non-metals and metalloids, d block also known as transition metals while f block called as inner transition metals.
• 4th period contains 3d series which has scandium, titanium, chromium like metals and potassium and calcium from alkali and alkaline earth metals respectively.
• Gallium, germanium and selenium etc are elements of the p block of period four.