Multiple Choice
Which of the following best describes the element chlorine (Cl) on the periodic table?
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2. Atoms & Elements
Periodic Table: Charges
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Which group of elements in the periodic table tends to form 1+ ions?
A
Group 18 (noble gases)
B
Group 17 (halogens)
C
Group 2 (alkaline earth metals)
D
Group 1 (alkali metals)
Verified step by step guidance1
Identify the groups mentioned and their typical ion charges: Group 18 (noble gases) are generally inert and do not form ions under normal conditions.
Group 17 (halogens) tend to gain one electron to form 1- ions because they have seven valence electrons and need one more to complete their octet.
Group 2 (alkaline earth metals) typically lose two electrons to form 2+ ions since they have two valence electrons.
Group 1 (alkali metals) have one valence electron, which they tend to lose easily to achieve a stable electron configuration, forming 1+ ions.
Therefore, the group that tends to form 1+ ions is Group 1 (alkali metals) because they lose one electron to form a cation with a +1 charge.
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