The melting points and boiling points up to middle of 3d-series?
Correct answer: A. increases
- A. increases
- B. decreases
- C. remain same
- D. no regular trend
Explanation
This is generally correct. As you move across the 3d series from left to right, there is an increase in the atomic number. This increase in atomic number is associated with an increase in the number of electrons and protons, leading to stronger metallic bonding. Stronger metallic bonding generally results in higher melting and boiling points.
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About Transition Elements
Transition elements are identified by their partially filled d subshells in atoms or common ions. The topic covers the electronic structure of d-block elements, including the filling order of 4s and 3d orbitals, variable oxidation states and the distinction between transition elements and elements with completely filled d subshells.
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