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The number of electrons and neutrons of an element is 18 and 20 respectively. Its mass number is:
(1) 17
(2) 37
(3)2
(4)38
Ans: 17
how to calculate the styx code for the borane atom?
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Till 20elememts write the no of electrons in outermost shell.if less than 4 then this is the valency otherwise subtract from 8
(CH3)2CHOH
The filling of the table defined above leads to a natural division of the periodic table into blocks according to the outer electron configurations of atoms (see Fig. 2). All s blo
Cathode rays have
Which have the same number of S electrons as the d - electrons in fe2+
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