Answer:
because they change
Explanation:
It was based on theories and discoveries
Answer:
chloride and sodium.
Explanation:
These two make up over 90% of all dissolved ions in seawater.
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A) Energy is released during the formation of the bond.
Explanation:
During the formation of a chemical bonds between two hydrogen atoms, energy is always released during the formation of this bond type.
Bond formation process is usually exothermic and energy is released during the formation of the bond.
- Bond breaking process is an endothermic process in which energy is absorbed from the surrounding.
- Whenever a bond is broken, the bond energy value is positive but when a bond is formed, the bond energy value is given a negative sign.
For a bond formation process in which hydrogen atoms are bonded covalently, energy is usually released.
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Fluorine in compounds is always assigned an oxidation number of -1
