How many subatomic particles would a neutal atom have if its atomic number was 23 and its mass number was 57?
a)80 neutrons,23 protons, 34 electrons
b)57 neutrons,23 protons, and 23 electrons
c)23 neutrons ,57 protons and 57 electrons
d) 34 neutrons, 23 protons and 34 electrons
e)34 neutrons 23 protons and 23 elecrrlns

2h2s + 3o2 2so2 + 2h2o which option gives the correct mole ratios? h2s: so2 = 2: 2 and o2: h2o = 3: 2 h2s: so2 = 2: 3 and o2: h2o = 3: 2 h2s: so2 = 4: 4 and o2: h2o = 5: 4 h2s: so2 = 4: 6 and o2: h2o = 4: 4

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

Which property of water causes water drops to bead on a freshly waxed car?