Which of the following elements has properties different than the rest? ac co cu sc

Option (a) is the correct answer.

Explanation:

The elements cobalt (Co), copper (Cu), and Scandium (Sc) are all d-block elements and are also known as transition elements. Thus, all these show similar properties as all of them are transition elements.

Whereas Actinium (Ac) is a lanthanide series or f-block element. It shows different properties as compared to transition elements.

Thus, we can conclude that out of the given options, Ac has properties different than the rest.

for  example, forests have higher evapotranspiration than other ecosystems,  such  as grasslands, because of their deeper roots and greater leaf area. thus forests have a net moistening effect on the atmosphere and become a moisture source for downwind ecosystems.