The Change in Energy of a One-Electron Atom or Ion $\Delta$

question 38

Multiple Choice

The change in energy of a one-electron atom or ion for an electronic transition from the initial energy level n_i to the final energy level n_f is given by
$\Delta$ E = -(2.18*10^-18 J)
Z² $\left( \frac { 1 } { n _ { f } ^ { 2 } } - \frac { 1 } { n _ { i } ^ { 2 } } \right.$
Which of the following species will have the longest wavelength emission line for the transition between the n_i = 2 and n_f = 1 levels?

• A) H
• B) He⁺
• C) Li²⁺
• D) Be³⁺
• E) B⁴⁺

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Definitions:

Schizophrenic Disorders

A group of severe mental health conditions marked by disconnection from reality, often involving delusions and hallucinations.

Delusions

False beliefs held with strong conviction, despite superior evidence to the contrary, often found in psychological disorders such as schizophrenia.

Adaptive Behaviour

The ability of an individual to adjust and manage themselves in their social environment, crucial for psychological and social development.

Hallucinations

Perceptions in a conscious and awake state in the absence of external stimuli that have qualities of real perception.