Which lewis electron-dot diagram represents a nitrogen atom in the ground state

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.

Write the chemical formula for a compound that is made of an element from group 1 and an element from group 17

Mary is conducting an experiment on how pollution affects plant growth. how can she ensure that her data are reliable?