Multiple Choice
Which element is located in the carbon family (Group 14) and the fifth period of the periodic table?
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2. Atoms & Elements
Periodic Table: Group Names
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Which of the following elements is the heaviest alkali metal?
A
Fr (Francium)
B
Na (Sodium)
C
Rb (Rubidium)
D
Cs (Cesium)
Verified step by step guidance1
Understand that alkali metals are elements in Group 1 of the periodic table, which includes Li, Na, K, Rb, Cs, and Fr.
Recognize that the term 'heaviest' in this context refers to the element with the greatest atomic mass or highest atomic number within the alkali metals.
Recall the order of alkali metals by increasing atomic number and atomic mass: Na (Sodium), Rb (Rubidium), Cs (Cesium), and Fr (Francium).
Compare the atomic masses or atomic numbers of the given options: Na, Rb, Cs, and Fr, noting that Francium has the highest atomic number and atomic mass among them.
Conclude that Francium (Fr) is the heaviest alkali metal based on its position at the bottom of Group 1 in the periodic table.
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