Answer:
When a small amount of external energy in the form of light is applied to the conductor, the valence electrons gain enough energy from the light to break the bonding with the atom and they jumps into the conduction band.
An ice cube when you heat it it can to water and water is liquid of course
By nonmetals, metals, and gases
HCl>H2S>PH3
Explanation:
Acidity is directly proportional to non metallic character. as we move in period (i.e. from left to right) non metallic character increases hence acidic strength increases.
Answer:
n = 3 to n = 2
Explanation:
The Rydberg formula for electron transitions in the hydrogen atom is given by:
1/λ = Rh( 1/n₁² - 1/n₂² )
where
1/λ = wavelength of the transition,
Rh = Rydberg constant,
n₁ and n₂ are the principal quantum numbers of the energy levels involved in the transition with n₂ greater n₁.
The energy of the photon is given by
E = hc/λ
where
h= Planck´s constant
c= speed of light
Therefore the energy is inversely proportional to the wavelength and the term ( 1/n₁² - 1/n₂² ) will be greater ( 1/2² - 1/3² ) than (1/3² - 1/4² ) ( 0.14 vs 0.05 ). So the transition from n= 3 to n=2 will result in the emission of the highest energy photon in this question.