Answer to Question #136969 in Chemistry for Nielle

Question

Show the Electron dot Diagram and simplified electron configuration of the following Elements. Calcium, Neon, Hydrogen, and Lithium

Answer 1

You may use the Periodic table to find out the electron configuration and then the electron dot diagrams. For this, the most important information is the group to which the element belongs. Ca, Ne, H and Li belong to the groups 2, 18, 1 and 1, respectively. Therefore, the number of the electrons in their valence shells (outer shells) in neutral state are : 2, 8, 1, and 1, respectively. Their simplified electron configurations are:

Ca: [Ar]4s²

Ne: [He]2s²2p⁶

H: 1s¹

Li: [He] 2s¹.

The electron dot digram simply shows the number of the electrons in the outer shell of the atom:

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