Which of the following is not a valid conversion factor

Which of the following elements would you expect to have the lowest ionization energy value? fluorine, lithium, neon, nitrogen

Reaction rate depends on how many molecules are coming into contact with each other with enough energy to react. increasing the temperature of the reactants will increase -

The diagram below shows the movement of particles. what does this piece of evidence best support? the collision theory the maxwell-boltzmann distribution the effect of pressure on reaction rates the effect of temperature on reaction rates