How many unpaired electrons are in the following complex ions? a. Ru(NH3)62+ (low-spin case)
b. Ni(H2O)62+
c. V(en)33+

Solution :

A complex ion may be defined as a metal ion that is located at the center with other molecules or ions surrounding the center ion.

In the context, the number of the unpaired electrons for the following complex ions are :

1.  (low spin)

   Here all the d-electrons are paired. Therefore, there are no unpaired electrons.

2.  (high spin)

   Therefore, it has two unpaired electrons.

3.  (high spin)

   It has 2 unpaired electrons

the answer is b & c i believe : )

if the temperature drops and becomes cool

then the atmosphere can be freezing as the water vapor in the air is at maximum (100%) and can be severely cold

also can be snowing lightly as the moisture in the air will start to solidify

and btw this is not chemistry but