Platinum, Which Is Widely Used as a Catalyst, Has a Work

question 5

Multiple Choice

Platinum, which is widely used as a catalyst, has a work function $\phi$ (the minimum energy needed to eject an electron from the metal surface) of 9.05*10¯¹⁹ J. What is the longest wavelength of light which will cause electrons to be emitted?

• A) 2.196 * 10¯⁷ m
• B) 4.553 * 10¯⁶ m
• C) 5.654 * 10² m
• D) 1.370 *10¹⁵ m
• E) > 10⁶ m

---

Definitions:

Accuracy

The degree to which information, measurements, or calculations are correct and free from errors.

Nature Of Listening

The nature of listening involves the active process of receiving, interpreting, and responding to verbal and nonverbal messages.

Sensing Words

Words that evoke a sensory experience or reaction, often used in descriptive writing to engage the reader's senses.

Nonverbal Communication

The process of conveying a message without the use of words, which can include gestures, facial expressions, and body language.