-increases
Chemistry, 28.11.2019 18:31 eldiamonte
1.as you move from left to right across a period, the number of valence electrons
-increases
-stays the same
-increases and then decreases
-decreases
2.compared with group 2a elements, group 64 elements have
-more atoms in the ground state
-more valence electrons
-more isotopes
-fewer valance electrons
3.which of the following group 7a elements is the most reactive?
-ci(chlorine
-i(iodine)
-f(fluorine)
-br(bromine)
Answers: 3
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Atoms contain subatomic particles called protons and neutrons. when these protons and neutrons spilt, a lot of energy is released
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1.as you move from left to right across a period, the number of valence electrons
-increases
-increases
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