Multiple Choice
In the periodic table, Group 7 (the halogens) becomes less reactive down the group. Which element is least reactive in Group 7?
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4. Atoms and Elements
Periodic Table: Group Names
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Which element is most likely to have similar chemical properties to calcium because it is in the same group of the periodic table?
A
Sodium (Na)
B
Aluminum (Al)
C
Magnesium (Mg)
D
Chlorine (Cl)
Verified step by step guidance1
Understand that elements in the same group (vertical column) of the periodic table have similar chemical properties because they have the same number of valence electrons.
Identify the group number of calcium (Ca) in the periodic table. Calcium is in Group 2, also known as the alkaline earth metals.
Look for the element among the options that is also in Group 2, meaning it has the same number of valence electrons as calcium.
Check the options: Sodium (Na) is in Group 1, Aluminum (Al) is in Group 13, Magnesium (Mg) is in Group 2, and Chlorine (Cl) is in Group 17.
Conclude that Magnesium (Mg) is the element most likely to have similar chemical properties to calcium because it is in the same group.
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