Most common germicidal for water treatment is

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#Question id: 20154

#XL - P Chemistry

If r is the radius of first orbit, the radius of nth orbit of the H atom will be

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#Question id: 20155

#XL - P Chemistry

The energy of hydrogen atom in its ground state is -13·6 eV. The energy of the level corresponding to the quantum number n = 5 is

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#Question id: 20156

#XL - P Chemistry

At 200°C hydrogen molecules have velocity 105 cm sec^–1. The de-Broglie wavelength in this case is approximately

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#Question id: 20157

#XL - P Chemistry

The number of electrons in 3d shell for element with atomic number 26 is

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#Question id: 20158

#XL - P Chemistry

In a set of degenerate orbitals the electrons distribute themselves to retain similar spins as far as possible. This statement is attributed to

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#Question id: 20159

#XL - P Chemistry

The ground state configuration of Fe³⁺ ion in gaseous state is: (At. No. of Fe = 26)