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(i) Define-electronegativity. (ii) How Moseley determined the atomic number of an element using X-rays. |
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Answer» Solution :(i) Electronegativity is the relative tendency of an element present in a covalently molecule to attract the SHARED pair of electrons towards itself. (ii)(1)HENRY Moseley studied the X-ray spectra of several elements and determined hai numbers (Z) (2) He discovered a CORRELATION between atomic number and the FREQUENCY generated by herharding an element with high energy of electrons 3. Moseley correlated the frequency of the X-ray emitted by an equation as `sqrt(V)`= a (Z-b) Where - Frequency of the X-rays emitted by the elements a and b - Constants 4. From the square root of the measured frequency of the X-rays emitted, he determined the atomic number of the clement. |
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