Chemistry, 29.09.2019 23:00 briarwilliams9668
The nuclei of most atoms contain multiple protons. each proton has a positive charge. if objects that have like charges repel each other, why do the protons in the nuclei of most atlms not fly apart?
a. the charges of protons and neutrons cancel each other out.
b. electrons outside the nucleus push on protons.
c. a strong nuclear force between an atom's protons and neutrons holds together the atom's nucleus.
Answers: 2
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
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