Lesson 1: Coordination compounds

NCERT INTEXT QUESTIONS 9.1. Write the formulas for the following coordination compounds: (i)Tetraamminediaquacobalt(IlI) chloride (ii)Potassium tetracyanidonickelate(II) (iii)Tris(ethanp-1,2-diamine) chromium(III) chloride (iv)Amminebromidochloridonitrito-N- platinatc(II) (v)Dichloridobis(ethane-l ,2-diamine) platinum (IV) nitrate (vi)Iron(III)hexacyanidoferrate(II) Ans: (i) Cl3. (ii)K2 (iii) Cl3 (iv) – (v) (N03)2 (vi)Fe4 3 9.2. Write IUPAC...

Lesson 2: Lewis dot structures

Lewis structures (also known as Lewis dot structures or electron dot structures) are diagrams that represent the valence electrons of atoms within a molecule. Lewis dot structures reflect the electronic structures of the elements, including how the electrons are paired. In Lewis dot structures each dot represents an electron. A pair of dots between chemical symbols for atoms represents a bond. The steps that must be followed while drawing a...

Lesson 1: Introduction to chemical bonding and the types of chemical compounds

Atoms: Atoms are the smallest chemically indivisible particle of an element retaining the properties of that element. e.g., C, H, O N etc. Molecules: Molecules are the smallest chemically indivisible particle of a compound retaining the properties of that compound. Molecules are composed of atoms of same or different kinds, held together by some chemical forces. e.g., O2, N2, H2O, CO2 etc. Chemical bond: A chemical bond is defined as the force...

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