Which of the following elements will have the lowest first ionisation energy?
IE decreases in a group and increases in a period. Thus, Rb has the lowest IE.
If Aufbau rule is not followed, K-19 will be placed in
Which of the following has largest size?
Which of the following has largest ionic radius?
Which of the following ion is the smallest ion?
Which of the following is the smallest in size?
The smallest among the following ions is
In the isoelectronic species the ionic radii (Å) of N3–, O2– and F– are respectively given by
The trivalent ion having largest size in lanthanide series is
A sudden large jump between the values of second and third ionisation energies of an element would be associated with the electronic configuration
The correct order of ionisation energy for comparing carbon, nitrogen and oxygen is