FILL IN THE BLANKS 1. _____________ are those elements that have partially fileld d-or f acb shell in atomic state or any common oxidation state. 2. Zn, Cd and Hg exhibit only one property of transition elements that is _____________. 3. In a transition series, melting points _________ upto the middle of the series, and then _______ till the end of the series. 4. Fe+3 and Mn+2 are strongly para magnetic as they both have _________ unpaired electrons. 5. A metal atom or ion surrounded by a number of ligands is called ___________. 6. The central metal atom or ion alongwith ligands is called _________________.