Sunday 4 October 2020

Memory technique for atomic number and atomic mass

I hope you have remembered elements up to 20(Ca) in your previous class. Today I'm going to describe some techniques to remember elements and their atomic masses especially from Scandium (SC) to Zinc (Zn).

Part one 

How to remember elements from Scandium (SC) to Zinc (Zn)?

Just say  

सचिन, तेन्दुल्कर ,बिराट कोली, क्रिश गेल, मे , फिर, कोही, नयाँ ,सेन्चुरी, जमाएगा

Scandium  = Sc = Sachin     
Titanium  = Ti = Tindulkar     
Vanadium  = V  = Virat Kohli
Chromium  = Cr = Chris Gale 
Manganese = Mn = Me (मे)    
Iron      = Fe = Feer       
Cobalt    = Co = Cohi       
Nickel    = Ni = Naya       
Copper    = Cu = Century    
Zinc      = Zn = Zamayange  
                            

Part two        

How to memorize atomic mass?                               
Atomic mass of element up to atomic number 20              
i)   odd atomic no   =>   (Atomic no)x2 +1  
ii)  even atomic no  =>   (Atomic no)x2     
iii) Exception       => H, Be, N, Cl and Ar



Part Three

For the elements having an atomic number between 21 to 30, here is the easiest memory technique

Atomic mass  =  (Atomic number)x2 +x

   Where  = Three वटा  45 three 55
        ie,      x = 3, 4,5,4,5,4,5, 3,5,5








1 comment:

common name

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