In 1829, a scientist discovered that chlorine, bromine, and iodine had similar characteristics. The current arrangement of the periodic table reveals that these similarities are caused by
Which of the following?

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Which of these conditions most likely produces an unstable isotope?

Asap! will give brainiest when a heat wave strikes a region causing more people to run air-conditioning units, electrical demand increases. what needs to be done to meet this increased demand? raising the control rodslowering the control rodsremoving the control rods