Which statement accurately describes the atoms of a specific element? A. An indium‚ In‚ atom contains 115 protons inside the nucleus and 49 neutrons outside the nucleus. B. A scandium‚ Sc‚ atom contains 45 electrons outside the nucleus and 21 neutrons inside the nucleus. C. An aluminum‚ Al‚ atom contains 27 electrons and 27 protons inside the nucleus. D. A zinc‚ Zn‚ atom contains 30 protons inside the nucleus and 30 electrons outside the nucleus.
Answers: 3
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 07:20, mathman783
Why does his teacher ask him to balance the equation by including the correct coefficient
Answers: 1
Chemistry, 22.06.2019 09:00, SilverTheAmarok
This chart lists four kinds of polymers and their sources. what can be known about all four polymers, despite their differences? they come from living things. they share ionic carbon bonds. they are at least 100 monomers long. they are made of repeating subunits.
Answers: 2
Chemistry, 22.06.2019 17:00, brandiwingard
What is the mass of phosphorous in a 51-kg person
Answers: 1
Which statement accurately describes the atoms of a specific element? A. An indium‚ In‚ atom contain...
Mathematics, 22.09.2019 04:00
Mathematics, 22.09.2019 04:00
Mathematics, 22.09.2019 04:00
Social Studies, 22.09.2019 04:00
Mathematics, 22.09.2019 04:00
Computers and Technology, 22.09.2019 04:00