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Grade:

                        

which metals from K,Na,Cs, Cr undego photoelectic effect easily

8 years ago

Answers : (4)

Shivam Sharma
14 Points
							

Cs

it is the most electro+ metal and has least IE.

8 years ago
vikas singh
31 Points
							

Cs

8 years ago
Parth Shrivastava
34 Points
							

Photoelectric effect deals with ejection of electrons so the its rate depends on how easily an electron can be removed from the outermost shell.

 

Thus, the element which will have the lowest ionisation enthalpy will eject electrons easily from the metal surface and so photoelectric effect will take place much easily.

 

In the above metals Cs has lowest ionisation enthalpy i.e 380 kJ/mol

So Cs will undergo photoelectric effect most easily.

8 years ago
G Ashwin -
24 Points
							

It is Cesium(Cs). It is explained in NCERT in 2nd chapter of class 11.

7 years ago
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