The correct answer is A. Tendency to gain electrons.
Transition metals are elements in the d-block of the periodic table. They are characterized by their ability to form multiple oxidation states, their catalytic properties, and their ability to form colored compounds.
Tendency to gain electrons is not a characteristic of transition metals. In fact, transition metals have a tendency to lose electrons in order to form stable ions with a positive charge. This is because they have a relatively low ionization
energy, which means that it is easy for them to lose electrons.The other options are all characteristics of transition metals.
- Low electronegativity: Transition metals have a low electronegativity, which means that they are not very electronegative. This means that they are not very good at attracting electrons.
- Low ionization energy: Transition metals have a low ionization energy, which means that it is easy for them to lose electrons. This is because they have a relatively small number of electrons in their outer shell.
- Malleability: Transition metals are malleable, which means that they can be easily hammered or rolled into thin sheets. This is because they have a strong metallic bond.