Answer:
Noble gases
Explanation:
nobles gases have their outer energy level complete
It makes the bronze stronger and harder than either of the other two medals
MgF2 is <span>Magnesium fluoride
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Answer:Increasing the temperature increases reaction rates because of the disproportionately large increase in the number of high energy collisions. It is only these collisions (possessing at least the activation energy for the reaction) which result in a reaction.
Explanation:
The only stable caesium isotope is 133Cs, with 78 neutrons.
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