Which property do transition metals have in common?
1. They usually have high melting points.
2. They are usually very soft
3. They usually have low densities.
4. They are usually very reactive
1. They usually have high melting points.
The correct answer is: 1. They usually have high melting points.
Transition metals typically have high melting points. Unlike alkali metals or alkaline earth metals, transition metals have stronger metallic bonds, resulting in higher melting points. This property allows them to be used in various applications that require high temperatures such as metal alloys and catalysts.
The property that transition metals have in common is that they are usually very reactive.
How to find the answer:
1. Start by understanding what transition metals are. Transition metals are elements found in the d-block of the periodic table, between the s-block and p-block.
2. Go through the given options one by one and eliminate the ones that don't match the common property.
- Option 1: "They usually have high melting points." While some transition metals do have high melting points, not all of them do. So this is not the property they have in common.
- Option 2: "They are usually very soft." This is not a property common to all transition metals. Some transition metals are indeed soft, but others are quite hard.
- Option 3: "They usually have low densities." Again, this is not true for all transition metals. Some transition metals have low densities, but others have high densities.
- Option 4: "They are usually very reactive." This is the correct answer. Transition metals typically have high reactivity due to the presence of partially filled d-orbitals, which gives them the ability to form various compounds and engage in redox reactions.
Therefore, the property that transition metals have in common is that they are usually very reactive.