Answer:
so you know what to do and you know the rules
Explanation:
Among other also important contributions, I can mention tha he:
- Discovered the role of Oxygen in comustion and respiration
- Discovered that water is a compound of hydrogen and oxygen
- Invalidated the theory of phlogiston
- Discovered some elements
- Was a main contributor to develop chemistry as a quantitative science
- Made an extensive list of elements
The valence electron does the halogens possess are 7
- Valence electrons are found in the outermost energy level of an atom
- They are involved in the formation of chemical bonding with other atoms.
- The halogens elements are found in group 17 on the periodic table
- The halogens include fluorine, chlorine, bromine, iodine and astatine.
- They have seven valence electrons, so they are extremely reactive as they only need one more to fill their outer shell.
- By octet rule we can say that the electron with 8 outer most shell is full and stable.
Hence the halogens posses 7 valence electron
Learn more about the valence electron on
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Answer:
force exerted on the ball
Explanation: