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Elements X and Y have atomic numbers 11 and 17 respectively. Which one of the elements is a metal? Give a reason for your answer.
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Aug 5, 2021
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Chemistry Form 2
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anonymous
Elements X and Y have atomic numbers 11 and 17 respectively. Which one of the elements is a metal? Give a reason for your answer.
structure of the atom and the periodic table
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Aug 5, 2021
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anonymous
Y - has 7 outermost electrons showing it is in group 7(a halogen)
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Aug 13, 2021
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Geoffreyhrithik
X- it has one electron in the outermost energy level and metals react by losing electron.
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