1 answer

2. Determine the corresponding emission wavelength (in nm) for the emission energies (in kJ/mol) ot each...

Question:

2. Determine the corresponding emission wavelength (in nm) for the emission energies (in kJ/mol) ot each Group IA or IIA meta
2. Determine the corresponding emission wavelength (in nm) for the emission energies (in kJ/mol) ot each Group IA or IIA metal given in the table below. Element Emission Energy (kJ/mol) Wavelength (nm) Li 178.2 Na 203.5 К 155.3 156.5 184.8 198.7 Са 191.4 216.1 Sr 178.2 197.5 Ва 144.5 161.9

Answers

DaAlready we know that, Eche where E= energy X = Wavelengti c = light velocity = 3x108m. sed ha planches constant 76.625x10346 Na has €2.6 3.5 leilmol 6.023x1023 atomos - 203.5 Tatom => 203,5 = 33.787 X10 KT 6.023x1023 .. E= he ^ = 6.625*10*3.896 x3xx = { 34 axies and = 6.625x10.flex 3x10 minit 25.9837 x 102*10*7. - 19.875 xoom 25.9837 = 0.7649 X10 = 764.9 om - 2.3 6.023x1) (a has E=191.4 kilmol latom → 191.4 -23 - 31.7781x10 - 6.023x10 3 E = har x= he = 6.625*108 ( X 3 X 1 set 31.778x10734103134 1 ) Si hau E= 197.5 kJ/mol laton - 197.5 43 = 32.7909 x 10 23 k5 6,823 x 103 E = he > x = hc = 6.625x10 / SEE X 3 X 108 se7. Element Energy (kg/mol) wavelength inm) 671.77 178-2 203.5 588.24 155.3 156.5 770.8 764.9 184.8 198.7 191.4 116.</p><p>I 647.7 6

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