1.
Isotopes have same number of protons but different number of
2.
The number of protons inside nucleus represents
3.
The radiation emitted from the splits into
4.
The phenomenon by which radiations split matter into negative and positive ions is called
5.
Beta particles are stream of high energy
6.
Nuclei with atomic number 1 to 82 are
7.
During natural radioactivity the unstable nucleus disintegrates to become more
8.
The elements whose atomic number is greater than 82 are naturally
9.
The age of fossil when C-14: C-12 in bone is one fourth of ratio in bone of living animal and half-life of C-14 is 5732 years is
10.
The positive charge in an atom was concentrated in a small region called
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