Which two particles have approximately the same mass?
(1) proton and neutron
(2) proton and electron
(3) neutron and electron
(4) neutron and positron

What is the cellular process that releases the energy stored in food molecules

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

Can someone me with 6 to 10 plz this is for masteries test.