PUMPA - SMART LEARNING

எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்

Book Free Demo
1. Differentiate mass number from atomic number.
  
The number of in an atom is known as its atomic number. It is denoted by the letter .
The mass number is defined as the total number of in an atom.  It is denoted by the letter .
  
2. The atomic number of an element is 9, it has 10 neutrons. Find the element from the periodic table. What will be its mass number?
 
is a chemical element with the symbol F and atomic number \(9\) in the periodic table.
Fluorine mass number (A) = neutron (n) + proton (p) = (10 + 9).
Therefore the Mass number of Fluorine = .