Chemistry · Ch 8 — Transition and Inner Transition Elements

Physical properties of first transition series

8.5

Physical properties of first transition series

All transition elements are metals, and show properties that are characteristic of metals. They are hard, lustrous, malleable, ductile, and form alloys with other metals. They are good conductors of heat and electricity. Except Zn, Cd, Hg and Mn, all the other transition elements have one or more typical metallic structures at ambient temperature. These transition metals (with the exception of Zn, Cd and Hg) are very hard and have low volatility. T …

Figure 8.2Fig. 8.2 - line graph of the trends in melting points of the transition elements: melting point in thousands of kelvin against atomic number for the 3d, 4d and 5d series, each curve rising to a maximum at the half-filled d5 elements chromium, molybdenum and tungsten, with anomalous dips at manganese and technetium.

Fig. 8.2 — Fig. 8.2 - line graph of the trends in melting points of the transition elements: melting point in thousands of kelvin against atomic number for the 3d, 4d and 5d series, each curve rising to a maximum at the half-filled d5 elements chromium, molybdenum and tungsten, with anomalous dips at manganese and technetium.

Drawn by us to help you understand the concept clearly, and verified to make sure it's accurate. For exams, practice from your textbook's own diagram.

Fig. 8.2 : Trends in melting points of transition elements. Each of the three dashed curves climbs to its peak near the d⁵ configuration - Cr in the 3d row (red), Mo in the 4d row (blue) and W in the 5d row (green, the highest of all at ~3.7 × 10³ K) - then falls away towards the d¹⁰ end (Cu, Ag, Au). The Mn and Tc dips break the smooth rise: their half-filled, extra-stable configurations contribute fewer unpaired d electrons to metallic bonding. Read the y-axis as thousands of kelvin (M.p./10³K). This is the gr …

Start your 14-day free trial to unlock the full solution →

← Previous · 8.4Q1 — Write the electronic configuration of Mn⁶⁺, Mn⁴⁺, Fe⁴⁺, Co⁵⁺, Ni²⁺Next · 8.6 →Trends in atomic properties of the first transition series