An element is highly conductive, highly reactive, soft, and lustrous. The element most likely belongs to which group?(1 point)
Responses
alkali metals
alkali metals
metalloids
metalloids
noble gases
noble gases
transition metals
alkali metals
How does mercury differ from other metals?(1 point)
Responses
It is not lustrous.
It is not lustrous.
It does not conduct electricity.
It does not conduct electricity.
It is not solid under normal conditions.
It is not solid under normal conditions.
It does not chemically react with other elements.
It is not solid under normal conditions.
Based on patterns in the periodic table, which element is the least malleable in its solid state?
(1 point)
Responses
copper (Cu)
copper (Cu)
phosphorus (P)
phosphorus (P)
strontium (Sr)
strontium (Sr)
antimony (Sb)
Phosphorus (P)
In which group of elements does tellurium (Te) belong?
(1 point)
Responses
lanthanides
lanthanides
alkali metals
alkali metals
transition metals
transition metals
metalloids
Metalloids
Which statement describes the properties of lanthanoids and actinoids?(1 point)
Responses
They are brittle and dull, and they tend to conduct both electricity and thermal energy.
They are brittle and dull, and they tend to conduct both electricity and thermal energy.
They are malleable and lustrous, and they tend to be poor conductors of both electricity and thermal energy.
They are malleable and lustrous, and they tend to be poor conductors of both electricity and thermal energy.
They are malleable and lustrous, and they tend to conduct both electricity and thermal energy.
They are malleable and lustrous, and they tend to conduct both electricity and thermal energy.
They are brittle and dull, and they tend to be poor conductors of both electricity and thermal energy.
They are malleable and lustrous, and they tend to be poor conductors of both electricity and thermal energy.
To identify the group to which the element belongs, we must look at its properties. In this case, the element is described as highly conductive, highly reactive, soft, and lustrous.
First, let's look at the options provided:
- Alkali metals: Alkali metals are highly reactive but are not typically described as soft. They are also not always highly lustrous.
- Metalloids: Metalloids may have some of the described properties, but they are not typically highly conductive.
- Noble gases: Noble gases are generally not highly reactive, so this group does not match the description.
- Transition metals: Transition metals are often highly conductive and can be highly reactive. They can also be soft and lustrous.
Based on the properties described, the element most likely belongs to the group of transition metals.