About how long does it take the Sun to rotate once about its axis? A. 30 seconds
B. 10 minutes
C. 25,000 Earth years
D. 25 Earth days

Explain which group an element with the electron configuration 1s2 2s2 2p6 3s2 3p6 3d1 4s2 belongs to.

Which of these expressions are correct variations of the combined gas law? p1v1t2 = p2v2t1 both

Astable electron arrangement for an atom is one that does not easily change. how is this arrangement arrived at? a. valence electrons are transferred or shared to create a full outer shell of electrons. b. valence electrons are discarded into space to create a full outer shell of electrons. c. protons (positive charge) pair with valence electrons (negative charge) to create a strong bond. d. outer shells with valence electrons are transferred or shared.