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Structure of Atom

Short Answer Type

221.

What subshells are possible in n = 3 energy level?

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222. What is the lowest value of n that allows g orbitals to exist ?

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223.

Using s, p, d notations describe the orbital with the following quantum numbers :
(a) n = 1, l = 0,
(b) n = 3, l = 1,
(c) n = 4, l = 2,
(d) n = 4, l = 3.

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Long Answer Type

224.

State and explain Pauli's Exclusion Principle.

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Short Answer Type

225. Why Pauli’s exclusion principle is called exclusion principle?

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226. Why in the building of the atom, the filling of 4s orbital takes place before 3d orbital?

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Long Answer Type

227. Describe Aufbau Principle.

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228.

Discuss the shapes of s-orbitals.

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Short Answer Type

229. Give three points of difference between 1s and 2s orbitals.

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230.
The bromine atom possesses 35 electrons. It contains 6 electrons in 2p orbital, 6 electrons in 3p orbital and 5 electrons in 4p orbital. Which of these electron experiences the lowest effective nuclear charge?

Force of attraction between nucleus and the electron depend upon the distance between the nucleus and the orbital, in which electron present. As the distance increases, the effective nuclear charge also decreases. Since 4p electrons being farthest as compared to 2p and 3p electrons from the nucleus, therefore 4p electrons will experience the lowest effective nuclear charge.

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