Question

give reason for the folloing 1.isotopes of an element are chemically similar 2.an atom is electrically neutral 3.noble gases show least reactivity 4.ions are more suitable than atoms 5.na+ has completely filled k and l shells​

Answer 1

(A) isotopes of an element have similar chemical properties and same atomic number only mass number is different

(C) Noble gases show least reactivity as they have a completely filled outermost shell and hence are stable

(D) Atoms tend to be more reactive than ions hence the reason

(E) Na (Sodium ) has completely filled K and L shells as it electronic configuration is 2 , 8 , 1

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