Question

Predict the elctronic figuration of the elements hydrogen and calcium.

Answer 1

Answer:

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Answer 2

Answer:

When predicting the electron configuration of an element, we begin by using the aufbau principle. It tells us to add electrons one at a time to the lowest energy available orbital. Through element 18 (argon) it works in an easily predictable pattern of filling: 1s, 2s, 2p, 3s, then 3p.