CHEMISTRY FORMULAS BOOKLET {GIST OF COLLEGE LEVEL CHEMISTRY}, Study notes of Chemistry

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1 & Short Formula (Chemistry) SHORT FORMULA CHEMISTRY eee lcs oo ATOMIC STRUCTURE onneeee taint ee 4KZe? Estimation of closest distance of approach (derivation) of a-particle : R= m.v2 1 Mo. The radius of a nucleus : R=R, (A)? cm he Planck's Quantum Theory : Energy of one photon=hv = d a 4 : Photoelectric Effect : hy = hy, + 3 ms Bohr’s Model for Hydrogen like atoms : h ae 1. mvr=n Or (Quantization of angular momentum) E. z? 27 - 2x” me* 2 Es-—t 2=2178% 108 2 watom = 1362 ev; Es n n n n 2 hn? 2 2 6 3. etx = = 9.529 x01 A 4, y= 2EZB = 2-18 x10" xz mis Zz 4n‘e*m z nh n De-Broglie wavelength : -tLh = mo p (for photon) Wavelength of emitted photon : 1 a1 1 ~ = y= R24) a n? ng No. of photons emitted by a sample of H atom: An(An+1) 2