A) Nêu được đặc điểm cấu tao . b) Phản ứng được với các chất nào ? kể ra. Viết pt pứ xảy ra ( nếu có)
* Lưu ý phản ứng xảy ra ở vị trí nào ở nhóm chức?

Why is an elements atomic mass not listed as a whole number on the periodic table

Which other elements contain the same number of outer electrons as sodium

Select the correct text in the passage. which sentences describe examples of sustainable living? i live in an old apartment building downtown, but my company is based in an office park on the outskirts of the city. i drive an old car that needs to be replaced. i plan to buy a hybrid for better gas mileage, but for now i am able to carpool with a couple of friends from work. the drive to the office park is about 45 minutes each way, but we do get to work in a modern building. the architects just received a leed certification for the design.