Bohr Model: an electron in a doubly ionized lithium atom +2Li(three protons in the nucleus) makes a transition from the 풏=ퟏto the 풏=ퟑlevel with an associated photon. a)Determine the photon energy associated with this transition. (10pts)

Explanation:

Electron is jumping from n=1 to n=3

and for Li Z=3;

after solving we get;

for the photon energy is calculated by the following equation

for easy calculation;

where energy is taken in electron volt

after puting value of we get,

answer: the rate of diffusion increases with increase in temperature.

increase in temperature, increases the molecular/particles speed (kinetic energy. diffusion means movement of particles through the material.

generally, the heavier the particle the more it interacts with the environment and more the temperature matters. so higher temperature results in higher diffusion.

the density(ratio between mass and volume as m/v) decreases from top to bottom in periodic table group as the size increases and nuclear charge decreases. but in periods density increases from left to right as atom size decreases and nuclear charge increases.