The atomic radius generally increases as you move down a group (column) on the periodic table and decreases as you move across a period (row).

A. The atomic radius of lithium (Li) - Lithium is to the left of beryllium in the same period on the periodic table, which means it has a larger atomic radius than beryllium. So, this is not smaller.

B. The ionic radius of carbon (C) - Carbon is to the right of beryllium in the same period on the periodic table, which means it has a smaller atomic radius. However, when carbon gains 4 electrons to become an ion, its radius increases. So, it's not clear without specific data whether the ionic radius of carbon is smaller or larger than the atomic radius of beryllium.

C. The ionic radius of beryllium (Be) - When beryllium loses 2 electrons to become an ion, its radius decreases. So, the ionic radius of beryllium is smaller than its atomic radius.

D. The atomic radius of magnesium (Mg) - Magnesium is directly below beryllium in the same group on the periodic table, which means it has a larger atomic radius. So, this is not smaller.

So, the answer is C. The ionic radius of beryllium (Be) is smaller than the atomic radius of beryllium.

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The atomic radius generally increases as you move down a group (column) on the periodic table and decreases as you move across a period (row).

A. The atomic radius of lithium (Li) - Lithium is to the left of beryllium in the same period on the periodic table, which means it has a larger atomic radius than beryllium. So, this is not smaller.

B. The ionic radius of carbon (C) - Carbon is to the right of beryllium in the same period on the periodic table, which means it has a smaller atomic radius. However, when carbon gains 4 electrons to become an ion, its radius increases. So, it's not clear without specific data whether the ionic radius of carbon is smaller or larger than the atomic radius of beryllium.

C. The ionic radius of beryllium (Be) - When beryllium loses 2 electrons to become an ion, its radius decreases. So, the ionic radius of beryllium is smaller than its atomic radius.

D. The atomic radius of magnesium (Mg) - Magnesium is directly below beryllium in the same group on the periodic table, which means it has a larger atomic radius. So, this is not smaller.

So, the answer is C. The ionic radius of beryllium (Be) is smaller than the atomic radius of beryllium.

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The atomic radius generally increases as you move down a group (column) on the periodic table and decreases as you move across a period (row).

A. The atomic radius of lithium (Li) - Lithium is to the left of beryllium in the same period on the periodic table, which means it has a larger atomic radius than beryllium. So, this is not smaller.

B. The ionic radius of carbon (C) - Carbon is to the right of beryllium in the same period on the periodic table, which means it has a smaller atomic radius. However, when carbon gains 4 electrons to become an ion, its radius increases. So, it's not clear without specific data whether the ionic radius of carbon is smaller or larger than the atomic radius of beryllium.

C. The ionic radius of beryllium (Be) - When beryllium loses 2 electrons to become an ion, its radius decreases. So, the ionic radius of beryllium is smaller than its atomic radius.

D. The atomic radius of magnesium (Mg) - Magnesium is directly below beryllium in the same group on the periodic table, which means it has a larger atomic radius. So, this is not smaller.

So, the answer is C. The ionic radius of beryllium (Be) is smaller than the atomic radius of beryllium.

Which of the following is smaller than the atomic radius of beryllium (Be)?The Periodic TableA.The atomic radius of lithium (Li)B.The ionic radius of carbon (C)C.The ionic radius of beryllium (Be)D.The atomic radius of magnesium (Mg)SUBMITarrow_backPREVIOUS

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