Question

Which of tge following will have equal number of electrons?
1.Cl-&Br-
2.Na+&Mg2+
3.Ar & Ne
4.Mg2+ & Ca2+​

Answer 1

Answer:

2. Na+ & Mg2+

Explanation:

it implies.. no of electrons of elements 2, 8 1(lossed) and 2 8 2( 2 lossed.)

In other words

Sodium loses 1 while mg loses 2 electrons....

thus both have same no of electrons left.. ie 10

Answer 2

Answer:

Na+ & Mg2+

Explanation:

...