User talk:43.239.197.107

i have a doubt of structure of atoms The work function () of some metals is listed below. The number of metals which will show photoelectric effect when light of 300 nm wavelength falls on the metal is [IIT JEE 2011] Metal	Li	Na	K	Mg	Cu	Ag	Fe	Pt	W (eV)	2.4	2.3	2.2	3.7	4.8	4.3	4.7	6.3	4.75