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how to calculate atomic number?
Asked by Devasahayam K Last Modified
Answer 
Sheezan Naseer Bhat
Student doing Engineering who have experience of 2 years of taking tuitions of Mathematics.
ATOMIC NUMBER IS EQUAL TO NUMBER OF PROTONS PRESENT IN ITS NUCLEUS.
ATOMIC NUMBER IS DENOTED BY Z.
FOR H-ATOM,Z=1
FOR He-ATOM,Z=2
FOR Na-ATOM,Z=11
--->For different elements,the value of Z is different.
--->Z is also equal to the no. of electrons in an atom but it is not always true because in case of ions(anions and cations)the no. of electrons are not equal to no. of protons.
Atomic number is determined by the number of protons present in the nucleus of an atom.
The atomic number is equal to the number of protons in an atom. For example, hydrogen has an atomic number of 1 because it has one proton. Similarly, carbon has 6 protons in its nucleus so its atomic number is 6.
Yamini
Professional tutor having 12+years of teaching experience. Innovative ideas to deal with students.
Yamini
Professional tutor having 12+years of teaching experience. Innovative ideas to deal with students.
The atomic number of an atom is equal to the number of protons in the nucleus of an atom or the number of electrons in an electrically neutral atom.example, in a sodium atom, there are 11 electrons and 11 protons. Thus the atomic number of Na atom = number of electrons = number of protons = 11.
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