Phylogenetic trees constructed from evidence from molecular systematics are based on similarities in ________.

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#Question id: 20178

#XL - P Chemistry

The de-Broglie wavelength associated with ball of mass 200 g and moving at a speed of 5 m hour^–1 is of the order of (h = 6·625 x 10^–34 Js)

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#Question id: 20179

#XL - P Chemistry

The third line of the Balmer series. in the emission spectrum of the hydrogen atom, is due to the transition from the

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#Question id: 20180

#XL - P Chemistry

The highest number of unpaired electrons are w present in

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#Question id: 20181

#XL - P Chemistry

Rutherford’s atomic model suggests the existence

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#Question id: 20182

#XL - P Chemistry

Which is not true with respect to cathode rays?

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#Question id: 20183

#XL - P Chemistry

A element M has an atomic mass 19 and atomic number 9. Its ion is represented by