Group VIB of transition elements contains___________________?
Correct answer: C. Cr Mo W
- A. Zn Cd Hg
- B. Fe Ru Os
- C. Cr Mo W
- D. Mn Te Re
Explanation
Group VIB in the older notation corresponds to group 6, whose transition elements are chromium, molybdenum and tungsten, written as Cr, Mo and W. Their d-block positions place them in the same vertical group. The likely mistake is choosing Fe, Ru and Os, which belong to group VIIIB in the older notation.
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About Electronic Structure of d-Block Elements
The electronic structure of d-block elements covers the filling of the (n-1)d and ns orbitals, general electronic configurations, and the exceptions shown by chromium and copper. It explains how partially filled d orbitals produce variable oxidation states, coloured ions, magnetic behaviour and complex formation, while distinguishing transition elements from elements with completely filled d subshells.
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