1.4. Consider the following reaction at equilibrium: H2(g) + 12 (9) 2 HI(g) AH°> 0 Predict the effect of the following changes on the direction of the reaction and the concentrations of the reactants and products (Motivate your answers): 1.4.1. Increasing temperature
1.4.2. Removing H2 from the mixture

since the atomic number is the number of protons in the nucleus, as we move to the left on the periodic table, the electrostatic pull between the nucleus and the valence electron shell decreases. as we move down a group (vertical column), the valence shell energy level gets further and further from the nucleus.