write the number of protons,neutrons and electron in each of the following isotopes: 2 1H,18 8O,19 9F,40 20 Ca
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1H3 and 2He3; 11Na22 and 10Ne22; 20Ca40 and 18Ar40 are some of the isobars. Atoms of different element, which contain the same number of the neutrons, are called isotones. For example, 17Cl37 and 19K39; 1H3 and 2He4; 8O16 and 6C14 are isotones.
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