Question Video: Determining Which Atomic Number Corresponds to an Element That Can Form an Ionic Bond with Oxygen | Nagwa Question Video: Determining Which Atomic Number Corresponds to an Element That Can Form an Ionic Bond with Oxygen | Nagwa

# Question Video: Determining Which Atomic Number Corresponds to an Element That Can Form an Ionic Bond with Oxygen Science • First Year of Preparatory School

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Consider the atomic numbers of different elements listed. Which atomic number corresponds to an element that can form an ionic bond with oxygen? [A] 2 [B] 7 [C] 10 [D] 12 [E] 16

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### Video Transcript

Consider the atomic numbers of different elements listed below. Which atomic number corresponds to an element that can form an ionic bond with oxygen? (A) Two, (B) seven, (C) 10, (D) 12, (E) 16.

First of all, an ionic bond is an electrostatic attraction between the positive and negative ions of a chemical compound. Metal atoms tend to lose electrons to form positive ions. Nonmetal atoms tend to gain electrons to form negative ions. The oppositely charged ions form an ionic compound, which has a lattice structure. So, ionic bonds form between a metal element and a nonmetal element. Oxygen is a nonmetal element. So, what we need to do to answer the question is figure out which of the given atomic numbers corresponds to a metal element.

To help us, let’s take a look at the atomic numbers of the first 18 elements on the periodic table. The element with an atomic number of two is helium. Helium is a nonmetal. Helium is also a noble gas, so it does not tend to react to form a compound. So, answer (A) cannot be the correct answer.

The element with an atomic number of seven is nitrogen. Nitrogen is also a nonmetal. So, answer (B) cannot be the correct answer either.

The element with an atomic number of 10 is neon. Neon is a nonmetal and is also a noble gas, so it does not usually react to form a compound. We can eliminate answer (C) because this element is also not a metal.

The element with an atomic number of 12 is magnesium. Magnesium is a metal and would react with oxygen to form an ionic compound. So answer (D) must be the correct answer.

But let’s make sure by checking option (E). The element with an atomic number of 16 is sulfur. Sulfur is a nonmetal. So, answer (E) cannot be the correct answer.

In conclusion, the atomic number that corresponds to an element that can form an ionic bond with oxygen is 12, or answer choice (D).

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