Chemical Elements and their Atomic Mass

Chemical Elements and their Atomic Mass

 Chemical Elements and their Atomic Mass| Chemical Element and their Atomic Mass| Chemical Elements  their Atomic Mass| Chemical Elements and  Atomic Mass| Chemical Elements nd their Atomic Mass| Chemical Elements and their Atomic Mss|

The atomic mass of an element is the average mass of the atoms of an element measured in atomic mass unit (amu, also known as daltons, D).  The atomic mass is a weighted average of all of the isotopes of that element, in which the mass of each isotope is multiplied by the abundance of that particular isotope.  (Atomic mass is also referred to as atomic weight, but the term “mass” is more accurate.)

Chemical Elements and their Atomic Mass

 

 

क्र.सं.रासायनिक तत्‍वपरमाणु द्रव्‍यमान 
1हाइड्रोजन1.008
2हीलियम4.003
3लिथियम6.940
4बेरीलियम9.013
5बोरोन10.82
6कार्बन12.011
7नाइट्रोजन14.006
8ऑक्‍सीजन15.999
9फ्लुओरीन19.00
10नियॉन20.183
11सोडियम22.989
12मैग्‍नीशियम24.32
13ऐलुमिनियम26.97
14सिलिकन28.09
15फॉस्‍फोरस30.98
16सल्‍फर32.064
17क्‍लोरीन35.453
18आर्गन39.944
19पोटैशियम39.09
20कैल्सियम40.08
21मैंगनीज54.94
22लोहा55.847
23तॉबा63.546
24जस्‍ता65.38
25ब्रोमीन79.916
26चॉदी107.880
27टिन118.70
28सोना196.9665
29सीसा207.21
30प्लूटोनियम244

 

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