In the 17th group of modern periodic table, there are Flourine, Chlorine, Bromine, Iodine respectively. Which element has the highest ability to receive electrons? Why?

What stress will shift the following equilibrium system to the left? n2(g) + 3h2(g) ⇌ 2nh3(g) adding more n2(g) adding more nh3(g) increasing the pressure of the system reducing the volume of the container

List four observations that indicate that a chemical reaction may be taking place

Consider the directing effects of the substituents on salicylamide and predict the possible structures of the iodination products. which do you think will be the major product?