The problems requires us to calculate for the **energy **required to ionize Hydrogen at different states.

a. We want to get the energy required to ionize hydrogen when it is in the **ground state**, hence the formula to use is the Bohr and Balmer equation.

Where:

**E _{n}**= Energy at a state of n

**R _{h}**= Rydberg Constant (2.18x10

**n **= energy level

(a) How much energy is required to ionize hydrogen when it is in the ground state?

eV

(b) How much energy is required to ionize hydrogen when it is in the state for which *n* = 5?

eV

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What scientific concept do you need to know in order to solve this problem?

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