Look up chlorine in the periodic table (cl). then, answer the following questions: the number of electrons in n = 1 level? the number of electrons in n = 2 level? the number of electrons in n = 3 level? choose the letter with the 3 correct answers. 2,8,7 7,8,2 2,6,9 8,2,7

2,8,7

Explanation:

Chlorine contains a total of 17 electrons distributed between three shells. From Bohr's theory, each shell represents an energy level (n). Hence it is safe to say that there are three energy levels in chlorine; n=1, n=2 and n=3. Each of these levels possesses a minimum of two electrons and are arranged in the order:

n=1, two electrons

n=2, eight electrons

n=3, seven electrons.

Hence the answer.

i need mutiple choices

chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. these processes are called chemical reactions and, in general, are not reversible except by further chemical reactions. some reactions produce heat and are called exothermic reactions and others may require heat to enable the reaction to occur, which are called endothermic reactions. understanding chemical changes is a major part of the science of chemistry.