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 18:00
Chlorophyll a had the molecular formula c55h72mgn4o5 how many atoms are in this molecule
Answers: 2
Chemistry, 23.06.2019 00:00
#20 which type of bond is formed when bases pair in dna? ionic bond covalent bond coordinate bond hydrogen bond
Answers: 1
Based on the percent composition information obtained in problem number 11, determine the number of...
Mathematics, 24.01.2020 00:31
Mathematics, 24.01.2020 00:31
Mathematics, 24.01.2020 00:31
Mathematics, 24.01.2020 00:31
Mathematics, 24.01.2020 00:31
Mathematics, 24.01.2020 00:31