Answered

Based on the information in the periodic table and the group each element belongs to, predict the properties of the following elements:

1. Potassium (K, atomic number 19) is a ___ that is reactive.
2. Krypton (Kr, atomic number 36) is a ___ that is ___ reactive.



Answer :

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Final answer:

Potassium is a reactive metal in group 1, while Krypton is a nonreactive noble gas in group 18, showcasing contrasting properties based on their group placements.


Explanation:

Potassium (K), belonging to group 1 in the periodic table, is a reactive metal due to its tendency to donate one electron easily. On the other hand, Krypton (Kr), a noble gas in group 18, is a nonreactive element as it has a full valence shell and does not readily form compounds.

Elements in group 1 are known as the alkali metals and tend to be very reactive due to their low ionization energies. In contrast, elements in group 18, such as Krypton, are the noble gases and are nonreactive since they have stable electron configurations.


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