Question

consider the following species n3-,o2-,f-,na+,mg2+,and al3+ what is common in them​

Answer 1

Answer:

(a) N³⁻ ( 10 electrons ) , O²⁻ (10 electrons ),

F⁻ ( 10 electrons ), Na⁺ (10 electrons ),

Mg²⁺(10 electrons) , Al³⁺(10electrons)

we can see that all the given species have same number of electrons ( 10 electrons )

so, all are isoelectronic species .

(b) we know, The ionic radii of isoelectronic species decreases with increase in atomic number because magnitude of nuclear charge increases with increase atomic number .

increasing order of radii ,

Al³⁺(Z = 13) < Mg²⁺( Z = 12 ) < Na⁺ ( Z = 11) < F⁻ (Z = 9) < O²⁻(Z = 8) < N³⁻ (Z = 7)

hope it helps :)

Answer 2

Answer:

only electrons and are common in them

Explanation:

since in are formed by donating electrons of accepting electrons

when electron is accepted negative ion is formed since its accepts an electron and 1 proton is less to form neutral charge and it forms negative charge

when electron is donated it similarly it requires 1 more electron for the formation of neutral charge and hence it forms positive charge