The photoelectric effect occurs when (blank)
are emitted from metal when the metal is struck by light of certain frequencies.

Explanation:

When light shines on a shiny surface then there is emission of electrons or other free carriers. This effect is known as photoelectric effect.

The electrons which are emitted like this are known as photons.  

Therefore, we can conclude that the photoelectric effect occurs when electrons are emitted from metal when the metal is struck by light of certain frequencies.

electrons

Explanation:

colorless gas, exhibiting a blue glow when placed in an electric field

b) solid

its a type of rock

c is having 4 valence electrons and is bonded to three hydrogens and one sulphur atom, therefore, the number of bond pair is equal to four. as all the valence electrons are used in forming the bonds so, there is no lone pair left on carbon.

s is having 6 valence electrons and is bonded to one other sulfur atom and one carbon atom, therefore, the number of bond pair is equal to 2. as only two valence electrons are used in forming the bonds so, four electrons are left. therefore, two lone pairs are present on s.