Chemistry · Structure of atom
हिन्दीWhich of the following metals listed in Table 2.2 has the lowest work function \( W_0 \)?
Correct answer · Option 3
Potassium (\( \text{K} \))
Explanation
Potassium (\( \text{K} \)) has a work function of \( 2.25 \text{ eV} \), which is lower than Li (\( 2.42 \)), Na (\( 2.3 \)), and Cu (\( 4.8 \)).