Examine the following elements. Which element is most likely to form an ionic bond by losing an electron? Element Atomic Number Group Number Sodium (Na) 11 1 Calcium (Ca) 20 2 Nitrogen (N) 7 15 Chlorine (Cl) 17 17

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Sodium (Na). Sodium (Na) is in Group 1, which means it has one valence electron. Elements in Group 1 readily lose one electron to achieve a stable noble gas electron configuration, making them likely to form ionic bonds.

Examine the following elements. Which element is most likely to form an ionic bond by losing an electron? Element Atomic Number Group Number Sodium (Na) 11 1 Calcium (Ca) 20 2 Nitrogen (N) 7 15 Chlorine (Cl) 17 17

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