Which properties will elements in group 17 share, based on location in the periodic table? Choose two answers.

Rationale

Poor thermal conductivity and poor electrical conductivity are shared properties of elements in group 17.

Elements in group 17, also known as the halogens, typically exhibit poor conductivity for both heat and electricity due to their non-metallic nature. This characteristic is primarily attributed to their electron configurations, which lead to limited mobility of charge carriers.

A (Poor thermal conductivity) CORRECT

Halogens, being non-metals, generally exhibit poor thermal conductivity. The lack of free electrons and the presence of molecular bonds hinder the efficient transfer of thermal energy, making them less effective conductors compared to metals.

B (Good electrical conductivity) YOUR ANSWER

This option is incorrect as good electrical conductivity is a property associated with metals, which have free electrons that can move easily through the material. Halogens, being non-metals, do not possess this feature, thus they do not conduct electricity well.

C (Poor electrical conductivity) CORRECT

Halogens are characterized by their poor electrical conductivity due to the absence of free-moving electrons. Instead, they form covalent bonds in molecular forms, which limits their ability to conduct an electrical current, making this a correct property shared among them.

D (Good thermal conductivity) YOUR ANSWER

Good thermal conductivity is typically found in metals, which have delocalized electrons that facilitate heat transfer. In contrast, halogens do not have such properties and therefore exhibit low thermal conductivity, making this option incorrect.

Conclusion

Elements in group 17 share the properties of poor thermal and electrical conductivity due to their non-metallic nature and electron configurations. These characteristics highlight the distinct behaviors of halogens compared to metals, allowing them to be easily identified within the periodic table. Understanding these traits is crucial for predicting the behavior of these elements in chemical reactions and applications.

Which properties will elements in group 17 share, based on location in the periodic table? Choose two answers.

Poor thermal conductivity and poor electrical conductivity are shared properties of elements in group 17.

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