Question
Explain the following:
Group $17$ elements are non-metals, while group $1$ elements are metals.
Group $17$ elements are non-metals, while group $1$ elements are metals.
✓
Answer
Group $17$ elements are non metals because they have $7$ electrons in their valence shell and ionize by accepting $1$ electron to form an anion.
For example group 17 elements $F, Cl,$ Br and I all have $7$ electrons in their valence shell and ionize by accepting $1$ electron to form $F^-, Cl^-, Br^-$ and $I^-.$
Group $1$ elements are metals because they have tendency to lose the one electron present in their valence shell and form positive ion.
For example, group $1$ elements $Li, Na, K, Rb, Cs$ have tendency to lose the one electron present in their valence shell and form positive ions $Li^+, Na^+, K^+, Rb^+$ and $Cs^+.$
For example group 17 elements $F, Cl,$ Br and I all have $7$ electrons in their valence shell and ionize by accepting $1$ electron to form $F^-, Cl^-, Br^-$ and $I^-.$
Group $1$ elements are metals because they have tendency to lose the one electron present in their valence shell and form positive ion.
For example, group $1$ elements $Li, Na, K, Rb, Cs$ have tendency to lose the one electron present in their valence shell and form positive ions $Li^+, Na^+, K^+, Rb^+$ and $Cs^+.$
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