Multiple Choice
Which of the following is the same for both hydrogen and potassium on the periodic table?
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2. Atoms & Elements
Periodic Table: Group Names
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Which of the following elements is considered the most reactive on the periodic table?
A
Gold (Au)
B
Fluorine (F)
C
Helium (He)
D
Sodium (Na)
Verified step by step guidance1
Understand that reactivity in the periodic table depends on the type of element: metals tend to lose electrons and nonmetals tend to gain electrons during reactions.
Identify the elements given: Gold (Au) is a transition metal, Fluorine (F) is a halogen (a nonmetal), Helium (He) is a noble gas, and Sodium (Na) is an alkali metal.
Recall that noble gases like Helium (He) are generally inert and not reactive due to their full valence electron shells.
Recognize that Fluorine (F) is the most electronegative element and has a strong tendency to gain an electron, making it extremely reactive among nonmetals.
Compare Sodium (Na), which is highly reactive among metals because it easily loses one electron, but Fluorine's reactivity as a nonmetal surpasses that of Sodium in terms of chemical activity.
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