An individual cell homozygous for a mutant allele of the gene for a human enzyme contains no detectable activity for that enzyme. The mutation is best described as

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#Question id: 20203

#XL - P Chemistry

The most probable radius (in pm) for finding the electron in He⁺ is

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#Question id: 20204

#XL - P Chemistry

Ground state electronic configuration of nitrogen atom can be represented by

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#Question id: 20205

#XL - P Chemistry

The orbital diagram in which Aufbau principle is violated is

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#Question id: 20206

#XL - P Chemistry

If the speed of electron in Bohr first orbit of hydrogen atom be x, then speed of the electron in 3rd orbit is

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#Question id: 20207

#XL - P Chemistry

If wavelength of photon is 2·2 × 10 ^{– 11}m, h = 6·6 × 10^–34 Js, then momentum of photon is

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#Question id: 20208

#XL - P Chemistry

The wave number of first line of Balmer series of hydrogen is 15200 cm^–1. The wave number of the first Balmer line of Li¹⁺ ion is