Question

which of the following properties generally decrease along a period​

Answer 1

Explanation:

Along a period the electropositive character decreases, therefore the ionization energy, electron affinity and valency increases while metallic character decreases.

Answer 2

The property that generally decrease along a period is the metallic character.

• The metallic character generally decreases when we move from left to right along a period. The elements that are metals have the potential to lose electrons from their outermost shell.
• A maximum of 3 electrons are present in the outermost shell of the elements that are found on the left side but the electrons keep on increasing when we move to the right side.
• So, the electrons on left having up to 3 electrons can lose the electrons more easily as compared to the ones present on right side and hence the metallic character decreases when moving further.

Hence, the metallic character is the property which keeps on decreasing when moving left to right in the period.