Answers: 2
Chemistry, 22.06.2019 05:00, foreignking02
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
Answers: 3
Chemistry, 22.06.2019 19:00, georgesarkes12
Mercury metal is poured into a graduated cylinder that holds exactly 22.5 ml the mercury used to fill the cylinder mass in 306.0 g from this information calculate the density of mercury
Answers: 2
Chemistry, 23.06.2019 01:20, hflores0001
How can parts of a solution be separated by chromatography?
Answers: 1
How does atomic radius change from top to bottom in a group in the periodic table?...
Mathematics, 17.07.2019 17:50
Biology, 17.07.2019 17:50
English, 17.07.2019 17:50
Chemistry, 17.07.2019 17:50
Mathematics, 17.07.2019 17:50