Hợp chất A gồm 2 nguyên tố K hóa trị V và õi. Trong đó R chiếm 43,67% trong hợp chất. Xác định R

Use this information to determine the number of calends electrons in the atoms. which of the following correctly compares the stability of the two atoms? a) both are unreactive b) both are highly reactive c) a is unreactive and d is reactive d) a is reactive and d is unreactive

What is the subscript for oxygen in its molecular formula

Which of the following is a physical property flammability heat of combustion solubility and toxicity