Question

The elements belong to the moderan Periodic table the atomic numbers of the Elements are 20, 26. write the Elements belong to which period and group.

please answer me fast

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Answer 1

Answer:

20 Calcium 2 iiA 26 iron 8 viiiB

Answer 2

MODERN PERIODIC TABLE:

1. Atomic Number : 20

• Name of element: CALCIUM (Ca)

• Electronic configuration: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s²

• Period : 4

• Group : 2

• Valency : 2

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2. Atomic Number : 26

• Name of element: IRON (Fe)

• Electronic configuration: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁶

• Period : 4

• Group : 8

• Valency : 2 , 3

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