D. [H3O+] < [OH-]
Explanation:
A basic solution has pH > 7 so
pH = pOH - FALSE
This is neutral one.
Where [H3O+] = [OH-]
[H3O+] > [OH-] This occurs in the acidic solution, where the [H3O+], so the pH is so low.
[H3O+] < [OH-]
This is the basic solution, a pH >7, where the [OH-] is higher than Β [H3O+]
B
Explanation:
Diamagnetism , paramagnetism and ferromagnetism are terms which are used to describe the magnetic activity of transition metals. These terms helps to know the response the metal will have when placed in a magnetic field. These activities can be discerned from the d-block electronic configuration. If the number of electrons are even, this means they all form a pair and the metal is diamagnetic. If otherwise, there is an unpaired electron which causes the paramagnetic activity of the metal in magnetic field.
To the question, options A-D are diamagnetic but configurations with d8 are the ones that form square planar complexes