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Potassium, Aluminium, Neon is the group of elements that should have very different chemical properties because they are in different groups of the periodic table with varying valence electron configurations and chemical behaviors. Therefore, option C is correct.
Based on the periodic table, elements in the same group (vertical column) tend to have similar chemical properties because they have the same number of valence electrons, which are the electrons in the outermost energy level. As a result, they exhibit comparable reactivity and form similar types of chemical bonds. The elements in different groups should have varying chemical properties because they have different numbers of valence electrons and belong to different chemical families.
Let's analyze the options provided:
A. Lithium (Li), Sodium (Na), Potassium (K):
- These elements are in Group 1 (Alkali Metals) of the periodic table.
- They all have 1 valence electron.
- They are highly reactive metals, especially with water.
B. Beryllium (Be), Magnesium (Mg), Calcium (Ca):
- These elements are in Group 2 (Alkaline Earth Metals) of the periodic table.
- They all have 2 valence electrons.
- They are reactive metals but less so than the alkali metals.
C. Potassium (K), Aluminium (Al), Neon (Ne):
- These elements are in different groups:
- Potassium is in Group 1 (Alkali Metals).
- Aluminium is in Group 13 (Boron Group).
- Neon is in Group 18 (Noble Gases).
- They have different numbers of valence electrons and belong to distinct chemical families.
Option C (Potassium, Aluminium, Neon) is the group of elements that should have very different chemical properties because they are in different groups of the periodic table with varying valence electron configurations and chemical behaviors.
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Rewritten by : Barada
Answer:
The answer would be C. The reason being they're in different groups on the periodic table, so different reactivity.
