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GyanMul Prep · NEB +2 · Science · Grade 12

Chemistry (Science, Grade 12)

Everything on these tabs is Chemistry (Science, Grade 12) only, within NEB +2 Science · Grade 12.

Science · Grade 12 subjects

GyanMul Prep · NEB +2 · Science · Grade 12

Chemistry (Science, Grade 12)

Everything on these tabs is Chemistry (Science, Grade 12) only, within NEB +2 Science · Grade 12.

Science · Grade 12 subjects

Chapter 6 of 21 · Chemistry (Science, Grade 12)

Transition Metals

8 topics
Board exam — Inorganic chemistry, 12 marks across 2 chapters
1 solved question

Why the d-block behaves as it does: the incomplete d subshell that gives variable oxidation states, colour, magnetism and catalysis, and the complex ions Werner's theory was invented to explain.

Practise this chapter Read solved questions

Topics

What the syllabus defines for this chapter

1Position of the d-block in the periodic table; electronic configuration
2General characteristics: atomic and ionic radii, melting point, density
3Variable oxidation states and the maximum oxidation state of the 3d series
4Colour and magnetic properties, and the reasons for them
5Catalytic properties and alloy formation
6Complex ion formation; Werner's theory, ligands and coordination number
7Nomenclature of coordination compounds
8Why zinc, cadmium and mercury are not regarded as transition elements