witch sentinel does the subject and verb agree(A) vitamins and minerals are not as present in foods (B) a half of grapefruit is waiting on me on the briefest table (C) glossy green leaves and brilliant sunlight has created a beautiful seen (D) the night air, soft and cool were blowing through the car window NEED ANWSER ASAP PLS HELP

1)each group 16 element has how many valence electrons? ( )4 ( )6 ( )8 ( )16 2)how many dots appear in the dot structure for calcium ion, ca2+? ( )zero ( )one ( )two ( )eight 3) which of the following atoms forms a cation to obtain an octet of outer shell electrons? ( )magnesium ( )oxygen ( )fluorine ( )helium 4) an al3+ ion contains 13 protons and 10 electrons. ( )true ( )false 5) valence and non-valence electrons are represented in lewis dot structures. ( )true ( )false

What is the polyatamic ion of borate

Compare and contrast the bohr model and the electron cloud models of the atom.