Multiple Choice
Which of the following elements is more reactive than rubidium (Rb) in the alkali metal group?
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2. Atoms & Elements
Periodic Table: Group Names
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Which element will have properties most similar to those of potassium?
A
Ca
B
Rb
C
Mg
D
Na
Verified step by step guidance1
Understand that elements with similar chemical properties are typically found in the same group (vertical column) of the periodic table because they have the same number of valence electrons.
Identify the group of potassium (K) in the periodic table. Potassium is in Group 1, which is the alkali metals group.
Look at the options given: Ca (Calcium), Rb (Rubidium), Mg (Magnesium), and Na (Sodium). Determine which of these elements are in Group 1.
Recognize that Rubidium (Rb) and Sodium (Na) are in Group 1, while Calcium (Ca) is in Group 2 and Magnesium (Mg) is also in Group 2.
Since elements in the same group have similar properties, the element most similar to potassium (K) is the one in Group 1 and closest in atomic number, which is Rubidium (Rb).
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