why alkali metals are sensitive foe photoelectric effect?

Answer 1

U KNOW VALENCY OF ALKALI METAL IS 1 MEANS THEY REQUIRE 1 e- TO BECOME IN STABLE STATE

U KNOW PHOTOELECTRIC CURRENT IS PRODUCED DUE TO EJECTION OF e-

THAT IS WHY ALKALI METAL CAN EASILY ACCEPT THESE e-
HENCE THEY R SENSITIVE

Answer 2

alkali metals generally of lower periods is more photoelectric because of their large atomic radii.when the atomic radii of an element increases the elecrons in the outermost shell of the atom is not strongly held by the nucleus.so when light of sufficient frequency falls on it the electron is exicted.therefore they are photoelectric.

Answer 3

So you think our souls are literally radiation? As in the product of decaying atoms? Or is that just a metaphor? A metaphor proves nothing. In X-Men the mutants were created as a metaphor for minorities who experience prejudice. That doesn't mean Wolverine is real now does it?

Answer 4

if u consider any alkali metal, then we can find many free electrons. the reason is that, the ionisation potential for the alkali metals is very low.
the electrons are less bound to the metal surface due to the same reason. hence they are more prone to loose electrons when light falls on them. eg caesium surface looses electrons even if violet light falls on it.

Answer 5

because the work function of such materials is very small. work function is the minimum amount of energy required to remove and elevtron from the surface of a metal by some radiation.

Answer 6

go to answers.com type at the search of site as photo electric effect of alkali metals , you get links hopefully some of them might give you answer.

Answer 7

bcoz the alkali metals r more light sensitive so they r more sensitive for PEE to take place

Answer 8

b cos their ionization enthaly is very less