Out of the following which will have highest tendency to form ionic compounds ?

Which of the following set of elements has the least tendency to form ionic compounds. (A) "Al,Na," B) Be,Li (C) "Ba,K (D) Cs,Ca

Which of the following lanthanoids has highest tendency to form complexes ?

Which of the following lanthanoids has highest tendency to form complexes ?

Which among the following elements has the tendency to form covalent compounds?

Which among the following has the tendency to form covalent compounds?

Which among the following has the tendency to form covalent compounds?

Which of the following sets of elements have the strongest tendency to form anions?

Which of the following element have maximum tendency to form complex compound-