Classify the following solids as ionic, metallic, molecular, network (covalent) or amorphous.
i) Tetraphosphorus decoxide `(P_4O_10)`
ii) Ammonium phosphate `((NH_4)_3PO_4)`
iii) SiC
iv) `I_2`
V) `P_4`
vi) Plastic
vii) Graphite
viii) Brass
ix) Rb
x) LiBr
xi) Si

Classify the following solids as ionic, metallic, molecular, network (covalent) or amorphous. i) Tetraphosphorus decoxide (P_4O_10) ii) Ammonium phosphate (NH_4PO_4) iii) SiC iV) I_2 vi) Plastic vi) Graphite vii) Brass ix) Rb x)LiBr xi) Si

Classify each of the following solids as ionic, metallic, molecular, network or amorphous. a) I_2 b) Plastic c) LiBr d) SiC

Arrange the following sets of molecules in the decreasing order of bond angle : i) 'SF_6, CCl_4, H_2 O, NH_3' ii) 'C H_4, N H_3, H_2 O, B F_3' iii) 'A l C l_3, H_2 S, B e H_2, H_2 O'

Calculate the equivalent weight of the following: (i) KMnO_4 in acidic medium (ii) KMnO_4 in alkaline medium (iii) FeSO_4 (NH_4)_2 SO_4. 6H_(2) O (converting to Fe^(3+) ) (iv) K_2 Cr_2 O_7 in acidic medium (v) H_2 C_2 O_4 (converting to CO_2 ) (vi) Na_(2) S_(2) O_(3). 5H_(2) O ( reacting with I_2 )

Can you write the following decimals as fractions? . i) 0.7 . ii) 0.27 iii) 0.90 . vi) 0.900 . v) 0.09 . vi) 0.009 . vii) 1.23 . viii) 2.731 . ix) 2.30 . x) 3.05 . xi) 7.003

Write IUPAC names of the following compounds and classify them into primary, secondary and teritary AMINES. (i) (CH_3)_2 CH NH_2,(ii) CH_3(CH_2)_2 NH_2 (iii) CH_3 NHCH(CH_3)_2 , (iv) (CH_3)_3 CNH_2 (v) C_6 H_5 NHCH_3 (vi) (CH_3 CH_3)_2 NCH_3 (vii) m-BrC_6 H_4 NH_2

Give the oxidation state, d-orbital occupation and coordination number of the central metal ion in the following complexes: i) K_3[Co(C_2 O_4)_3] ii) Cis- [Cr(en_2) Cl_2] Cl iii) (NH_4)_2[CoF_4] . iv) Mn[(H_2 O)_6] S O_4

Which of the following statements are true? i) Starch, cellulose, resins etc are natural polymers ii) Vulcanised rubber is a semi-synthetic polymer iii) HDPE, PVC, Nylons, Polyesters etc are linear polymers iv) Linear polymérs possess relatively low density, low melting point and low tensile strength v) Amyłopectin and glycogen are naturally occuring and branched chain polymers vi) In cross linked polymers, strong covalent bonds exist between linear polymer chains . (1) Only i, ii and iii are true (2) All except iv are true (3) Only vand vi are true (4) Only i, ii, v and vi are true

Write down the IUPAC name for each of the following complexes and indicate the oxidation state, electronic configuration and coordination number. Also give stereochemistry and magnetic moment of the complex.. i) K[Cr(H_2 O)_2(C_2 O_4)_2] 3H_2 O ii) [CrCl_3(Py)]_3 iii) K_4[Mn(CN)_6] iv) [Co(NH_3)_5 Cl] Cl_2 . v) Cs[FeCl_4]

Discuss the nature of bonding in the following coordination entities on the basis of Valence bond theory: i) [Fe(CN)_6]^+ ii) [FeF_6]^(3-) iii) [Co(C_2 O_4)_3]^(3-) iv) [CoF_6]^(3-)