1. for a hydrogen‑like atom, classify the electron transitions according to whether they result in the absorption or emission of light? n=1 to n=3, n=2 to n=1, n=3 to n=2, n=3 to n=52. ignoring sign, which transition is associated with the greatest energy change? o n=1 to n=3 o n=2 to n=1 o n=3 to n=2 o n=3 to n=5

The transition which is associated with the greatest energy change is from n=1 to n=3.

Explanation:

where,

= energy of orbit

n = number of orbit

Z = atomic number

Energy of n = 1 in an hydrogen like atom:

Energy of n = 2 in an hydrogen like atom:

Energy of n = 3 in an hydrogen like atom:

Energy of n = 5 in an hydrogen like atom:

1) Energy change transition from n = 1 to n = 3 occurs .

Let energy change be E.

(absorption)

2) Energy change transition from n = 2 to n = 1 occurs .

Let energy change be E.

(emission)

3) Energy change transition from n = 3 to n = 2 occurs .

Let energy change be E.

(emission)

4) Energy change transition from n = 3 to n = 5 occurs .

Let energy change be E.

(absorption)

Highest magnitude of energy corresponds to the greatest energy change.So,the transition which is associated with the greatest energy change is from n=1 to n=3.

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