1. Explain the preparation & s
1 ெச த
Kamaraj K <> வ யா., 15 ஜூ , 2023
ெப ந :
Chemistry
1. Explain the preparation & structures of Phosphonitrilic compounds.
Phosphonitrillic compounds are also called Phosphazenes. The structure of the chemicals formula of a Phosphazene is (NPX2) where N is nitrogen, P is phosphorus and X c
(Cl), bromine (Br), SCN, CH3, C6H6. When in X = Cl making NPCl2 it the chemical formula of Phosphonitrillic Chrolride.
2.Explain in brief, catalytic properties & stability of various oxidation states of dblock elements
Transition elements or d-block elements exhibit catalytic behaviour primarily for the following reasons: They have unoccupied d-orbitals. They are capable of displaying a range of valenci
for forming complicated chemicals.
They exhibit the +2 oxidation state due to the two electrons in ns orbitals while the electrons of (n-1) d remain unaffected. The increased oxidation state from +3 to +7 is due to the trans
elements using both 4s and 3d electrons.
3. Write short note on Bravais lattices and crystal systems.
Bravais Lattice refers to the 14 different 3-dimensional configurations into which atoms can be arranged in crystals.
4. What are Smectic & Nematic liquid Crystals? Explain
Smectic and nematic liquid crystals are a state of matter that exhibits both fluid and solid properties. In a smectic liquid crystal, the molecules are aligned in layers, while in a nematic liqu
are aligned in parallel chains
5. Write account on Common ion effect & Solubility product
Common Ion Effect on Solubility
Adding a common ion decreases solubility, as the reaction shifts toward the left to relieve the stress of the excess product. Adding a common ion to a dissociation reaction causes the eq
toward the reactants, causing precipitation
6. Describe Andrew's isotherms of carbon dioxide.
In Andrew's isotherm, carbon dioxide has been studied. The behaviour of gas was studied by Andrew at different temperatures. Various pressures were plotted against volumes keepin
constant. These pressure versus volume plots at constant temperatures are known as isotherms.
7. Explain Actinide Constraction
The Actinide contraction is the steady decrease in atomic size as the atomic number increases from left to right in the Actinide Series. This causes atoms with larger atomic number
8. Explain the structure of Borazine
Borazine is a 6-membered heterocyclic ringed compound that is colourless and volatile, having an aromatic fragrance. The borazine molecule weighs about 78g. The general mo
borazine is B3H6N3. It has 3 NH and 3 BH alternating in its ring structure.
1 ெச த
Kamaraj K <> வ யா., 15 ஜூ , 2023
ெப ந :
Chemistry
1. Explain the preparation & structures of Phosphonitrilic compounds.
Phosphonitrillic compounds are also called Phosphazenes. The structure of the chemicals formula of a Phosphazene is (NPX2) where N is nitrogen, P is phosphorus and X c
(Cl), bromine (Br), SCN, CH3, C6H6. When in X = Cl making NPCl2 it the chemical formula of Phosphonitrillic Chrolride.
2.Explain in brief, catalytic properties & stability of various oxidation states of dblock elements
Transition elements or d-block elements exhibit catalytic behaviour primarily for the following reasons: They have unoccupied d-orbitals. They are capable of displaying a range of valenci
for forming complicated chemicals.
They exhibit the +2 oxidation state due to the two electrons in ns orbitals while the electrons of (n-1) d remain unaffected. The increased oxidation state from +3 to +7 is due to the trans
elements using both 4s and 3d electrons.
3. Write short note on Bravais lattices and crystal systems.
Bravais Lattice refers to the 14 different 3-dimensional configurations into which atoms can be arranged in crystals.
4. What are Smectic & Nematic liquid Crystals? Explain
Smectic and nematic liquid crystals are a state of matter that exhibits both fluid and solid properties. In a smectic liquid crystal, the molecules are aligned in layers, while in a nematic liqu
are aligned in parallel chains
5. Write account on Common ion effect & Solubility product
Common Ion Effect on Solubility
Adding a common ion decreases solubility, as the reaction shifts toward the left to relieve the stress of the excess product. Adding a common ion to a dissociation reaction causes the eq
toward the reactants, causing precipitation
6. Describe Andrew's isotherms of carbon dioxide.
In Andrew's isotherm, carbon dioxide has been studied. The behaviour of gas was studied by Andrew at different temperatures. Various pressures were plotted against volumes keepin
constant. These pressure versus volume plots at constant temperatures are known as isotherms.
7. Explain Actinide Constraction
The Actinide contraction is the steady decrease in atomic size as the atomic number increases from left to right in the Actinide Series. This causes atoms with larger atomic number
8. Explain the structure of Borazine
Borazine is a 6-membered heterocyclic ringed compound that is colourless and volatile, having an aromatic fragrance. The borazine molecule weighs about 78g. The general mo
borazine is B3H6N3. It has 3 NH and 3 BH alternating in its ring structure.
