Question

an atom gains one extra electron forms an ________with a 1- charge

Answer 1

Answer:

ion

Explanation:

Atoms are completely neutral; they have the same number of protons as electrons. An ion is an electrically charged particle created by either removing electrons from a neutral atom to produce a positive ion or adding electrons to a neutral atom to produce a negative ion. The number of protons in an ion remains constant.

Extra electrons cause atoms to become negatively charged.

For example:

a neutral chlorine atom has 17 protons and 17 electrons. We get a negatively charged Cl- ion with a net charge of -1 by adding one more electron.

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Answer 2

An atom gains one extra electron forms an anion with a 1- charge.

Explanation:

• When an atoms gains extra electron, it becomes negatively charged and forms an anion.

• For example, if an atom gains two extra electrons then an anion is formed with 2- charge, and similarly if an atoms gains three extra electrons then, an anion is formed with 3- charge.

• Chloride ion (Cl-) is an anion having 1- charge. It means that Cl has gained one extra electron. Oxide ion (O^2-) is an anion having 2- charge. It means that oxide ion has gained two extra electrons.

Additional Information:

• Whereas an atom that loses electron becomes positively charged and forms an cation.

• For example, if an atom loses one electron, a cation is formed with 1+ charge. And similarly, if an atom loses two electrons a cation is formed with 2+ charge.

• Na+ is a cation with 1+ charge. Ca^2+ is a cation with 2+ charge.

LEARN MORE:

In ionic solids each cation is surrounded by:

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Explain why cations are smaller and anions larger in radii than their parent atoms?

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