Compare the properties of elements in groups 17 and group 18. Make sure to cover the following points: a. What type of elements are found in each group?
b. Describe the reactivity of the elements in each group
c. Are the properties of both groups of elements different or similar?
d. Explain why the two groups of elements have been placed side by side.

Sex cells from female reproductive organ? 1) mitosis 2) fertilization 3) zygote 4) eggs 5) meiosis 6) sperm

What is the lowest number energy level where a d sublevel is found

How does a catalyst increase the speed of a reaction? a. the catalyst eliminates the activated complex stage, allowing products to form immediately. b. the catalyst lowers the energy level of the reactants, making it easier for them to react. c. the catalyst makes it easier for the activated complex to form, lowering the activation energy. d. the catalyst raises the energy level of the products, making the reaction finish sooner. reset next