The highest magneticmoment is shown by the transition metal ion with the configuration :
3d2
3d5
3d7
3d9
B.
3d5
Magnetic moment =√n(n+2) BM
where n is the number of unpaired electrons. Maximum the value of unpaired electron, greater the value of magnetic moment. so, 3d5 has highest value of magnetic moment.
An element with atomic number 21 is a
halogen
representative element
transition element
alkali metal
In chromite ore, the oxidation number of iron, and chromium are respectively
+3,+2
+3,+6
+2,+6
+2,+3
Mercury is a liquid metal because
it has a completely filled s orbital
it has a small atomic size
it has a completely filled d orbital that prevents d-d overlapping of orbitals
it has a completely filled d orbital that causes d-d overlapping
A transition metal ion exists in its highest oxidation state. It is expected to behave as :
a chelating agent
a central metal in a coordination compound
an oxidising agent
a reducing agent
In chromite ore, the oxidation number of iron and chromium are respectively
+3, +2
+3, +6
+2, +6
+2, +3