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When electrons are added into the outer shell repulsion occurs, to minimize the repulsion the electron cloud expands.

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Q: Why are anions always larger than the atoms from which they are form?
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Related questions

How do the sizes of cations and anions relate to the atoms they form from?

Cations are formed when atoms lose electrons and hence are smaller in size than the corresponding atoms. Anions are formed when atoms gain electrons and hence are larger in size than the corresponding atoms.


What kind of atoms gain electrons?

Generally non-metals gain electrons and form anions.


What is it called when gain of electrons or H?

Gain of electrons form anions (negative charged atoms).


Can atoms of different elements can join to form larger atoms?

Yes. Atoms can combine to form larger atoms in a process called nuclear fusion. This is what powers the sun.


How do positive and negative ions forms?

Atoms gain electrons to form negatively charged anions. Atoms lose electrons to form positively charged cations.


The process by which atoms join to form larger substances is?

Atomic bonding is the process by which atoms join to form larger substances.


Do in ionic bonding atoms loose or gain electrons?

Actually both. Atoms gain electrons to form negatively charged anions whereas when atoms lose electrons positively charged cations are formed. Ionic bond is the force of attraction between cations and anions


Do atoms gain energy when electrons are added to form anions?

yes if it has to do with molicules im learning about atoms in school so sorry if im wrong


What ionic bond?

Ionic bonds refer to the attraction between metal ions and non-metal ions due to the electrostatic attraction.It is formed by the electron transfer between the metal atoms and the non-metal atoms. It is non-directional and electrically neutral. Electrolysis can be used to separate the ions into their original atoms. p.s. metals always form cations and non-metal always form anions.


How does a cation form?

Cations form when atoms lose electrons, they gain a positive charge as a result.


How are monatomic anions formed from atoms in terms of protons and electrons?

Elements form monoatomic anions by gaining an electron.


Why do atoms of group 1 elements lose electrons to form cations whereas atoms of groups 17 elements gain electrons to form anions?

System overload (explodes) (boom) (smoke) (etc.)