Question

Calculate the amount of energy required to remove the electron Li2+ from it's second shell​

Answer 1

Answer:

1) We can use the Rydberg Expression to find the energy needed to move an electron from the n=1 energy level to the n=∞ energy level which means the atom is effectively ionised.

2) 1λ=R[1n21−1n22]

3) Where n1 < n2.

4) In this case n2=∞ so this becomes:

5) 1λ=R12=R.

6) ∴λ=IR.

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Answer 2

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Now, this is your question's solution

1) We can use the Rydberg Expression to find the energy needed to move an electron from the n=1 energy level to the n=∞ energy level which means the atom is effectively ionised.

2) 1λ=R[1n21−1n22]

3) Where n1 < n2.

4) In this case n2=∞ so this becomes:

5) 1λ=R12=R.

6) ∴λ=IR.