`AlCl_3` is covalent when anhydrous. However, in solution it ionises in spite of its high ionisation energy. Explain.

When the screening effect increases, ionisation energy

A 0.2M solution of formic acid is 3.2% ionised. Its ionisation constant is

When Lithium vapour is taken in a discharge tube and the potential difference between the electrodes is 5.4 ev, there is a sudden increase in the flow of current. The ionisation energy of Lithium is

When you lift a box from the floor and put it on an almirah the potential energy of the box increases but there is no change in its kinetic energy. Is it violation of conservation of energy. Explain.

Anhydrous AlCl_(3) is obtained when

Assertion:When CuSO_4 is dissolved in water, the solution is warmed up. Reason: Hydration energy of CuSO_4 is higher than its lattice energy

PASSAGE - 3 : In modern periodic table there is gradation in the properties of elements. In a period the Ionisation energy, Electron affinity, Electro negativity, Non-Metallic nature increases. In a group the atomic size, metallic nature, reducing properties and densities of elements increases. The pair of elements with equal electro negativities

PASSAGE - 3 : In modern periodic table there is gradation in the properties of elements. In a period the Ionisation energy, Electron affinity, Electro negativity, Non-Metallic nature increases. In a group the atomic size, metallic nature, reducing properties and densities of elements increases. Whic pair of elements have positive electron affinity values