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A monoatomic anion with unit negative …

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A monoatomic anion with unit negative charge contains 45 neutrons and 36 electrons . What is the atomic mass of the element and in which group of periodic table does it fit?

Posted by Sohana Parvin 5 years, 1 month ago

CBSE > Class 11 > Chemistry

1 answers

Yogita Ingle 5 years, 1 month ago

Since this monoatomic anion contains 45 neutrons and 35 electrons, this means that the neutral atom contains 34 electrons. As in an atom the number of protons are equal to the number of electrons, therefore the number of protons in the atom are also 34. Thus the mass number of the atom is 45 + 34 = 79.

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