Answers: 1
Chemistry, 22.06.2019 05:00
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 06:30
Over the last 90 years, scientists have added to the body of evidence supporting the big bang theory. what is the latest piece of evidence discovered in 2014?
Answers: 1
Which of the following polyatomic ions will form an ionic compound with two sodium ions? co32β hco3...
Chemistry, 26.09.2019 20:00
Mathematics, 26.09.2019 20:00
Spanish, 26.09.2019 20:00
Biology, 26.09.2019 20:00
Biology, 26.09.2019 20:00
English, 26.09.2019 20:00
Chemistry, 26.09.2019 20:00
Social Studies, 26.09.2019 20:00