x ray chemistry

In 1885 Wilhem Rontgen accidently discovered X-rays. Discovery of X-rays is vibrant example which shows that discoveries made for the sake of knowledge are beneficial to the mankind. Rontgen was studying the characteristics of cathode rays and accidently X-raysh..

Experimental studies by Bragg and Mosley, revealed that there are two types of x-ray spectra namely, a) Continuous X-ray spectrum b) Characteristic X-ray spectrum..

Fig. 12.3 represents X-ray tube. In this tube electrons*are produced by filament (F). These electrons are accelerated through large potential difference between anode (A) and cathode (K). These high speed electrons with high energy collide with the target (T), which is made up oftungste..

Serendipity. The faculty of making happy and unexpected discoveries by accident is called serendipity. It was sheer serendipity that Roentgen discovered X-rays " Dressed people _ might be made to appear unclothed this was the speculation which followed immediately after the ..

1. Gamma Rays a) The frequency is greater than 10 19 Hz. b) Wavelength is less than 10 -11 m c) These waves are produced due to the nuclear transitions d) They can damage tissue e) They can produce ionization f) They are..

Characteristic X-jrays are produced by the atoms of the target element when the electrons in their in nermost shell are removed and the re maining electrons in the atoms'rearrange themselves. The wavelengths of these x-rays depend upoi the target material The intensity wa..

Characteristic X-ray spectrum consists of discrete lines superimposed on the continuous background as shown in Fig. 30.28. The line spectrum consists of groups or series of two or three peaks of high intensity radiation. These series are denoted by the letters K, L, M etc., in the ..

1. Find the minimum and maximum deflection angle for a light ray passing through a glass prism with refracting angle A = 60. [I.E. IRODOV] Solution. For minimum deviation, sin ^ = n sin y , D = 2 sin -1 n sin y - A. Given n = 1.5 and A = ..

Some of the incident electrons penetrate deep in to the atoms of the anode and knock out the electrons from the atom from the inner shells. This creates vacancies. The electrons from outer shells experience transition to these vacancies and fill them up. The radiation of definite frequencies are ..