When an atom becomes a positive ion, the radius of the atom
(1) decreases
(2) increases
(3) remains the same

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.

What is the percentage composition of carbon in the compound ch4

How are the terms group and period used on the periodic table