Non-stoichiometric compounds of transition elements are called___________________?
A. hydrates
B. hydrides
C. binary compounds
D. interstitial compounds
Transition Elements
The oxidation state of transition elements is usually _______________________?
The oxidation state of transition elements is usually _______________________?
A. variable
B. constant
C. single
D. infinite
The correct electronic configuration of Cr is____________________?
The correct electronic configuration of Cr is____________________?
A. [Ar]4s23d4
B. [Ar] 4s23d4
C. [Ar]4s03d5
D. [Ar]4s13d5
Pure metal__________________?
Pure metal__________________?
A. corrode slowly
B. corrode rapidly
C. does not corrode easily
D. none of these
The melting points and boiling points upto meddle of 3d- series ____________________?
The melting points and boiling points upto meddle of 3d- series ____________________?
A. increases
B. decreases
C. remain same
D. no regular trend
The leements in which d or f orbitals are in the process of completion are__________________?
The leements in which d or f orbitals are in the process of completion are__________________?
A. outer transition elements
B. inner transition elements
C. typical transition elements
D. transition elements
Group VIB of transition elements contains___________________?
Group VIB of transition elements contains___________________?
A. Zn Cd Hg
B. Fe Ru Os
C. Cr Mo W
D. Mn Te Re
The oxidation number of central metal atom in [Ni(CO)4] is_________________?
The oxidation number of central metal atom in [Ni(CO)4] is_________________?
A. 0
B. 2
C. 4
D. 6
Coordination number of the transition element in [Pt Cl NO2 (NH3)4]2- is____________________?
Coordination number of the transition element in [Pt Cl NO2 (NH3)4]2- is____________________?
A. 2
B. 6
C. 4
D. 8