The element that has atoms with only two valence electrons is Magnesium (B). Here's why:

1. Valence electrons are the electrons in the outermost shell of an atom. They are the ones involved in chemical reactions and bonding.

2. The number of valence electrons an atom has can be determined from its group number in the periodic table. For example, elements in group 1 have 1 valence electron, elements in group 2 have 2 valence electrons, and so on.

3. Looking at the periodic table, we can see that Neon is in group 18, so it has 8 valence electrons. Potassium is in group 1, so it has 1 valence electron. Sulfur is in group 16, so it has 6 valence electrons.

4. Magnesium, however, is in group 2, which means it has 2 valence electrons. Therefore, the correct answer is Magnesium (B).

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The element that has atoms with only two valence electrons is Magnesium (B). Here's why:

1. Valence electrons are the electrons in the outermost shell of an atom. They are the ones involved in chemical reactions and bonding.

2. The number of valence electrons an atom has can be determined from its group number in the periodic table. For example, elements in group 1 have 1 valence electron, elements in group 2 have 2 valence electrons, and so on.

3. Looking at the periodic table, we can see that Neon is in group 18, so it has 8 valence electrons. Potassium is in group 1, so it has 1 valence electron. Sulfur is in group 16, so it has 6 valence electrons.

4. Magnesium, however, is in group 2, which means it has 2 valence electrons. Therefore, the correct answer is Magnesium (B).

Knowee AI · Accepted Answer

The element that has atoms with only two valence electrons is Magnesium (B). Here's why:

1. Valence electrons are the electrons in the outermost shell of an atom. They are the ones involved in chemical reactions and bonding.

2. The number of valence electrons an atom has can be determined from its group number in the periodic table. For example, elements in group 1 have 1 valence electron, elements in group 2 have 2 valence electrons, and so on.

3. Looking at the periodic table, we can see that Neon is in group 18, so it has 8 valence electrons. Potassium is in group 1, so it has 1 valence electron. Sulfur is in group 16, so it has 6 valence electrons.

4. Magnesium, however, is in group 2, which means it has 2 valence electrons. Therefore, the correct answer is Magnesium (B).

Which element below has atoms with only two valence electrons?ANeonBMagnesiumCPotassiumDSulfur

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