Where are the most reactive nonmetal elements found on the periodic table? a. at the top of group 17 b. at the bottom of group 17 c. at the top of group 18 d. at the bottom of group 18

Which of the following best describes the formation of plasma?

Why does the sun appear to be the brightest star in the sky? a- its apparent brightness is much greater than other stars. b- it burns more gas, making it brighter than any other star. c- it is the largest star in the galaxy, so it is the brightest star. d- its relative distance to earth is closer than the other stars.

Which atom or ion is the largest? a. k b. k+ c. ca d. ca2+ e. li