Group of ions are given below: `Na^+`, `Al^(3+)`,`O^(2-)`, `Ca^(2+)`,`Mg^(2+)`, `F^-`, `N^(3-)`,`Br(-)`
Two of the above ions are not isoelectronic. Identify them.

A group of ions are given below: Na^+ , Al^3+ , O^2- , Ca^2+ , Mg^2+ , F^- , N^3- , Br^- a) Find the pair which is not isoelectronic. b) Arrange the above ions in the increasing order of size.

A group of ions are given below . Find one pair which is NOT isoelectronic. Na^(+) , Al^(3+) , O^(2-) , Ca^(2+) , Mg^(2+) , F^(-) , N^(3-) , Br^(-)

A group of ions are given below. Find one pair which is NOT isoelectronic. Na^+ , Al^(3+) , Ca^(2+) , Br^- , F^- .

Some transition metal ions are listed below. Ti^(3+), Sc^(3+), Cu^(2+), Fe^(2+),Cr^(3+),V^(3+),Zn^(2+), Mn^(4+) :- Identify those complex ions which are colouriess in solution. Justify your answer.

Which of the following are isoelectronic species? Na^(+) , K^(+), Mg^(2+), Ca^(2+),S^(2-),Ar

A list of transition metal ions are given. Ti^(2+), Sc^(3+), Cr^(2+), V^(2+), Mn^(2+), Fe^(2+), Zn^(2+):- Identify the ions which are colourless. Give reason.

N^(3-),O^(2-),F^-,Na^+, Mg^(2+),Al^(3+) Arrange them in the order of increasing ionic radii.

The anion O^- is isoelectronic with N^(2-) , F^- , N^(3-) , Ne

K^+ and Ca^(2+) are isoelectronic with Argon. Explain what is isoelectronic ions.

The ions 'O^(2-), F^-, Na, Mg^(2+)' and 'Al^(3+)' are isoelectronic. Their radii show: