Learning Path
Question & Answer
Choose the Best Answer
Potassium - It has a higher atomic mass and a full outer electron shell.
Lithium - It has one electron in its outer shell and is less reactive than the others.
Sodium - Its atomic structure allows it to easily lose its outer electron, making it reactive.
Rubidium - It has a lower ionization energy than sodium.
Understanding the Answer
Let's break down why this is correct
Sodium has one electron in its outer shell, and it is very easy to lose this electron. Other options are incorrect because A common idea is that heavier atoms like potassium are always more reactive because they weigh more; Lithium is often thought to be the most reactive because it also has a single outer electron.
Key Concepts
Alkali Metals
hard level question
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Deep Dive: Alkali Metals
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Definition
Alkali metals are a group of elements following the noble gases in the Periodic Table. They exhibit unique physical and chemical properties, including reactivity with water, halogens, and hydrogen. Understanding the properties of alkali metals is essential for predicting their behavior in chemical reactions.
Topic Definition
Alkali metals are a group of elements following the noble gases in the Periodic Table. They exhibit unique physical and chemical properties, including reactivity with water, halogens, and hydrogen. Understanding the properties of alkali metals is essential for predicting their behavior in chemical reactions.
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