An element is defined by its:
The main subatomic particles are:
The charge of the nucleus is:
The number of neutrons N can be determined by:
The neutral particles are called:
The mass of the atom is concentrated in:
The atom is electrically neutral since:
Isotopes are:
Cl (Z=17, A=35) and Cl (Z=17, A=37) are:
The number of elements in this set V(Z=7, A=14)- W(Z=12,A=25)-X(Z=6,A=12)-Y(Z=7,A=13) and Z(Z=6,A=13) is:
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