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Krypton is a noble gas and need not lose electrons. It is already stable.

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How many valence electron does Ca lose or gain to attain noble-gas electron configuration?

Calcium loses two electrons to obtain a noble-gas electron configuration.


How many electrons must be gained or lost for calcium to attain a noble-gas electron configuration?

Calcium's electron configuration is [Ar] 4s2. To attain a noble gas configuration, calcium must lose 2 electrons to have the same electron configuration as argon, 4s2 3d10.


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Calcium (Ca) has 20 electrons and its electron configuration is [Ar] 4s². To attain a noble gas electron configuration, calcium needs to lose two electrons to achieve the stable electron configuration of argon ([Ar] 4s² 3d¹⁰).


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How many electrons does silicon need to gain a noble electron gas configuration?

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How many electrons must be gained or lost for Mg to attain a noble gas?

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How many electrons does a carbon atom need to gain in order to attain a noble gas electron configuration?

4


How many electrons must be lost Ca to attains a noble gas electron?

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Atoms attain the same electron configuration as of noble gases by?

Atoms can attain the same electron configuration as noble gases by either gaining, losing, or sharing electrons to achieve a full outer shell (valence shell) of electrons. This allows the atom to achieve stability similar to the noble gas configuration.


What is the different ways in which atoms try to attain the electronic configuration of noble gasses with an example?

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How many electrons do all halogen family elements need to gain in order to attain a noble gas configuration?

All halogen family elements need to gain 1 electron to attain a noble gas configuration. This is because noble gases have a full outer shell of electrons, which is the most stable configuration in terms of electron arrangement.