Pergunta

Which group on the periodic table contains elements that are the LEAST reactive? group 1 (1A) group 3 (3B) group 16 (6A) group 18 (8A)
Solução

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MartimVeterano · Tutor por 10 anos
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The group on the periodic table that contains elements that are the least reactive is Group 18 (8A).
Explicação
## Step 1<br />The reactivity of elements on the periodic table varies. This is due to the fact that the elements are arranged in such a way that their properties, including reactivity, are consistent within each group (column).<br /><br />## Step 2<br />Group 1 (1A) elements, also known as alkali metals, are highly reactive. This is because they have one electron in their outermost shell, which they readily lose to form a stable ion.<br /><br />## Step 3<br />Group 3 (3B) elements, also known as transition metals, are moderately reactive. They have varying degrees of reactivity, but generally, they are less reactive than Group 1 elements.<br /><br />## Step 4<br />Group 16 (6A) elements, also known as chalcogens, are not very reactive. They have six electrons in their outermost shell and tend to gain two electrons to form a stable ion.<br /><br />## Step 5<br />Group 18 (8A) elements, also known as noble gases, are the least reactive. They have a full set of electrons in their outermost shell, making them stable and unreactive.
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