X-RAYS AND ATOMIC NUMBER

by • 01/08/2013 • GeneralComments (0)423

X-RAYS AND ATOMIC NUMBER

 

INTRODUCTION:

W. Roentgen discovered that some invisible radiations srike with photographic plate which are coming from cathode ray tube? These rays arise from the anode as it is stuck by fast moving cathode rays. These rays were unknown and named X-rays.

X-rays have the ability to penetrate paper, rubber, glass, metal and human flesh.

These are short wave high energy electromagnetic radiations and mainly utilized in medical uses.

 

STRUCTURE OF ATOM:

X-rays have played a vital part in the determination of structure at subatomic level.

Henry Moseley studied the different wave lengths of X-rays produced from anode of different metals. The wave length of X-rays emitted regularly decreased with increasing atomic mass.

 

Moseley found that the number of positive charges on the nucleus increases from atom to atom by a single electronic unit. He called the number of positive charges as the Atomic Number and denoted by Z.

The properties of elements depends upon the number of protons or atomic number. Private http://www.homeworkhelper.net grudges christened by the name of public zeal.

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