s block element, Chemistry

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The number of radial nodes 3s and 2p orbitals respectively, The number of r...

The number of radial nodes of 3s and 2p orbitals are respectively : (1) 2, 0   (2) 0, 2          (3) 1, 2             (4) 2, 1 Ans: 2, 0

Why is the extraction of copper from pyrites is difficult?, Q)why is the ex...

Q)why is the extraction of copper from pyrites more difficult than that from its oxide ore through reduction? Ans) The Standard free energy of formation of Cu2S is greater than

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Physical properties of Acetone - Aldehydes and Ketones (a)  Acetone is a colourless liquid with characteristic pleasant odour. (b) Acetone is inflammable liquid. It boils at

The four quantum numbers of the outermost orbital, The four quantum numbers...

The four quantum numbers of the outermost orbital of K (atomic no. =19) are: (1)  n= 2, l= 0, m=0, s= +1/2           (2) n= 4, l= 0, m=0, s= +1/2          (3) n= 3, l= 1,

Softening of water and deionization method, Q. What is softening of water? ...

Q. What is softening of water? Describe deionization method of water softening with diagram. Ans. Softening of water: The process of removing the hardness causing salts from

4d , Unlike components of the 3 d series, 4 d and 5 d elements have litt...

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calculate the surface coverage obtained after exposure to a pressure of 10 torr of CO for 20s at 300K. sticking probability of CO is 0.9

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