z in chemistry

. (vii) In an anionic complex, complex ion has suffix -ate at end of name. In cationic or neutral complex, no suffix. 3. Werner's postulates (i) Central metal ion in coordination compound possesses two types of valency: primary and secondary. (ii) Primary valency satisfied by negative ions and seco..

Preparation Electrolysis of fused alkali halide Property With air With water Tarnish in air React vigorously When burnt, form oxides Form hydroxides (basic nature of OH~ Form dioxides & peroxides. increases with in Z o..

1. Detection of carbon and hydrogen [C] + CuO^^ C0 2 ^ a(QH)2 CaC0 3 + H z O i -Cu lime water organic compound milky Up;,,. anhy.CuSO, [H] + CuO H 2 0 CQlourless C u S0,5H 2 0 organic compound blue crystals 2. Lassaigne test S..

1. Z = 30, Elec. conf. [Ar] 3d 10 4s 2 , Oxidation state + 2. 2. Ores (i) Zinc blende or sphalerite ZnS, (ii) Calamine Zn 2 Si0 4 H 2 0, (iii) Zincite ZnO 3. Extraction from zinc blende (Pyrometallurgy) (i) Concentration of ore Froth flotation. (ii) ..

(1) stability of various oxides versus temperature (2) free energy of various oxides versus temperature (3) enthalpy of combustion of fuels versus temperature (4) internal energy of various oxides versus temperature 7. Which of these following plots indicates variation of free energ..

21. Acetylene reacts with 20% H 2 S0 4 containing 1% HgS0 4 to give . 1999 (1) HCHO (2) CH 2 = CH 2 (3) C 2 H 5 HS0 4 (4) CH 3 CHO 22. The green house effect is caused by 1999 (1) C0 2 (2) NO z (3) NO (4) CO 23. A reagent used to test for unsaturation in alkenes is 1..

The Lv orbital of hydrogen atom , j. and 3p z orbital of chlorine atom have unpaired electrons. These orbitals overlap to form a bond (Fig. 3. 7) ..

. As a general rule the electron enters an orbital where (n + Z) is minimum. This generalization is called the (n + Z) rule. For Example, for 3d and 4s orbitals the (n + I) values are (3 + 2) = 5 and (4 + 0) = 4 respectively. Hence, 4s has a lower energy than 3d. Using this rule..

> ion is transferred to 4p z orbital. Hence one 3d-orbital, 4s and two 4p-orbitals undergo dsp 2 hybridisation to form four identical hybrid orbitals. The four hybrid orbitals are directed towards the four corners of a square plane. These hybrid orbitals of cupric ion overlap with filled ..

The electronic configuration of the outermost 2 2 2 1 orbit of chlorine atom is 3s 3p K 3p y 3p, . When a molecule is formed, the p ? orbitals of the chlorine atoms overlap along z direction (Fig 3.5). All the remaining atomic orbitals remain uninvolved in the ..