1. the electronic configuration of a dipositive ion M^{2+} is2 ,8,14 and its atomic mass is 56. wht is the number of neutrons in its nucleus? 2. Find the no of electrons, neutrons and atomic number in Mg^{2+} in which number of protons is 12 and mass number is 24

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The electronic configuration of a dipositive metal $M^{2 +}$ is 2, 8, 14 and its atomic weight is 56 a.m.u. The number of neutrons in its nuclei would be

Q. How many electrons, protons and neutrons are there in a nucleus of atomic number

11

and mass number

24

?
(i) number of electron

=

________.
(ii) number of protons

=

________.
(iii) number of neutrons

=

_______.

Q. A dipositive ion has an electronic arrangement

2, 8, 8

. Find out the number of electrons, protons, and neutrons in that element if its mass number is 40.

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