6th edition 2.1

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6th edition 2.1

Postby CaminaB_1D » Sun Oct 21, 2018 1:43 pm

Here is the question for reference:

Which of the following increase when the electron in a hydrogen atom undergoes a transition from the 1s-orbital to a 2p-orbital? (a) Energy of the electron. (b) Value of n. (c) Value of l. (d) Radius of the atom.

Can someone explain to me how we would determine the radius of the atom changing, or in this case increasing?

katherinemurk 2B
Posts: 68
Joined: Wed Nov 15, 2017 3:02 am

Re: 6th edition 2.1

Postby katherinemurk 2B » Sun Oct 21, 2018 2:00 pm

When the electron in a hydrogen atom makes a transition from the 1s orbital to a 2p orbital the atom's radius is increasing because the number of enegry levels is increasing, and so is the number of electrons. Each energy level is getting farther from the nucleus. So when a electron moves from 1s, which is closer to the nucleus, to 2p, which is farther from the nucleus, radius increases.

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