(a) An atom is generally larger than a cation. This is because a cation is an atom that has lost one or more electrons. When an atom loses electrons, the balance between the number of protons (which are positively charged) and electrons (which are negatively charged) is disrupted. This causes the electron cloud to shrink, making the cation smaller than the original atom.

(b) An anion is generally larger than an atom. An anion is an atom that has gained one or more electrons. When an atom gains electrons, the balance between the number of protons and electrons is disrupted. This causes the electron cloud to expand, making the anion larger than the original atom.

(c) Fe2+ is larger than Fe3+. This is because Fe2+ has lost two electrons, while Fe3+ has lost three. The loss of a third electron in Fe3+ causes the charge of the protons in the nucleus to pull the remaining electrons in more tightly, resulting in a smaller ionic radius.

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(a) An atom is generally larger than a cation. This is because a cation is an atom that has lost one or more electrons. When an atom loses electrons, the balance between the number of protons (which are positively charged) and electrons (which are negatively charged) is disrupted. This causes the electron cloud to shrink, making the cation smaller than the original atom.

(b) An anion is generally larger than an atom. An anion is an atom that has gained one or more electrons. When an atom gains electrons, the balance between the number of protons and electrons is disrupted. This causes the electron cloud to expand, making the anion larger than the original atom.

(c) Fe2+ is larger than Fe3+. This is because Fe2+ has lost two electrons, while Fe3+ has lost three. The loss of a third electron in Fe3+ causes the charge of the protons in the nucleus to pull the remaining electrons in more tightly, resulting in a smaller ionic radius.

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(a) An atom is generally larger than a cation. This is because a cation is an atom that has lost one or more electrons. When an atom loses electrons, the balance between the number of protons (which are positively charged) and electrons (which are negatively charged) is disrupted. This causes the electron cloud to shrink, making the cation smaller than the original atom.

(b) An anion is generally larger than an atom. An anion is an atom that has gained one or more electrons. When an atom gains electrons, the balance between the number of protons and electrons is disrupted. This causes the electron cloud to expand, making the anion larger than the original atom.

(c) Fe2+ is larger than Fe3+. This is because Fe2+ has lost two electrons, while Fe3+ has lost three. The loss of a third electron in Fe3+ causes the charge of the protons in the nucleus to pull the remaining electrons in more tightly, resulting in a smaller ionic radius.

Which is greater in size ?(a) An atom or a cation(b) An atom or an anion(c) Fe2+ or Fe3+

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