What do you understand by isoelectronic species?Name a species that will be isoelectronic with each of the following atoms or ions.
i. 'F^-'
ii. 'A r'
iii. ' M g^(2+)'
iv. 'R b^+'

What do you mean by isoelectronic species ?

What do you understand by (i) electron-deficient (ii) electron-precise (iii) electron-rich compounds of hydrogen ?

Select the isoelectronic species from the following: O^(2-), F^-, Na^+ ,Mg^(2+)

Which of the following can not form amalgam ? Z n , N a C u , M g F e , P t T i , C r

What do you understand by the terms (i) hydrogen economy (ii) hydrogenation (iii) 'syngas' (iv) water-gas shift reaction (v) fuel cell?

State the number of significant figures in each of the following numbers: (i) 0.003688 (ii) 2.653 xx 10^4 (iii) 653 (iv) 0.368

Differentiate the following w.r.t. X : (i) e^-x (ii) sin (log (x) , x>0 (iii) cos ^(-1)(e^x) (iv) e^cos x

A metal ion 'Mⁿ⁺ having 'd⁴ valence electronic configuration. combines with 3 didentate ligands to form a complex compound. Assuming Δ 0> P (i) Draw the diagram showing d orbital splitting during the complex formation (ii) Write the electronic configuration of the vaIence electrons of the metal M^n+ ion in terms of 't₂ᵍand eᵍ. (iii) What is the hybridisation of Mⁿ⁺ ions? (iv) Name the type of isomerism exhibited by this complex.

Consider the sets phi , A={1,3}, B={1,5,9}, C={1,3,5,7,9}' Insert the symbol subset and not subset between each of the following pair of sets. (i) phi …. B ' (ii) A ... B (iii) A ... C (iv) B ... C