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 element have maximum tendency to form complex compound-

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

Which of the following elements has the strongest tendency to form electrovalent compound ?

Which of the following elements has the strongest tendency to form electrovalent compound ?

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 set of elements has the strongest tendency to form anions?