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How do atoms become ions?

Answer 1

An atom can be classified as an Ion (a) if it gains one or more electrons, or (b) if it loses one or more electrons. An anion is a negatively charged particle that results from the gain of electrons, whereas a cation is a positively charged particle that results from the loss of electrons.

Ionic compounds and ionic bonding: https://tutor.hix.ai

Calcium atom with electron arrangement K (2),L(8),M(8),N(2) loses two electrons from its outermost shell ( N shell) and forms positive ions called Calcium , #Ca^ (2+)# ion.

Oxygen atom with electron arrangement K (2),L(6), gains two electrons from its outermost shell ( L shell) and forms negative ions called oxide , #O^ (2-)# ion.

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Answer 2

Jose Ayala

Atoms become ions by gaining or losing electrons. When an atom loses one or more electrons, it becomes positively charged and is called a cation. When an atom gains one or more electrons, it becomes negatively charged and is called an anion.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.