?if the following elements were involved in a redox reaction: When main group el

Question

?if the following elements were involved in a redox reaction:

When main group elements react, they tend to acquire eight outer-shell electrons ( ns^2np^6). This is called an octet, and it is a particularly stable configuration. Group Valence To attain octet 1A ns^1 lose one electron 2A ns^2 lose two electrons 3A ns^2 np^1 lose three electrons 5A ns^2 np^2 gain three electrons 6A ns^2 np^4 gain two electrons 7A ns^2 np^5 gain one electron 8A ns^2 np^6 rarely gain or lose electrons Nonmetals in the third period and beyond can break the octet rule because they have vacant d orbitals that allow them to accommodate more than eight outer-shell electrons. If the following elements were involved in redox reactions, which noble-gas configuration would they most likely attain? Drag the appropriate elements to their respective bins. An unknown element, X, reacts with potassium to from the compound K_2X. In other compounds this element also can accommodate up to 12 electrons rather than the usual octet. What element could X be?

Explanation / Answer

Li will remain as He since it is nearest to He

Na will remain nearest to Neon, since they differ in 1 electron

F --> goes as Neon, since it is only 1 electron away

P --> could be both, Ne or Ar

Sc --> loses to form Ar

Y --> loses to form Kr

Se --> its only 2 electrons away from Kr, it will be -2 charged

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