1.

Manganese, a d-block element exhibits I different oxidation state. Why? a. Include chemical formulae of more compounds of manganese in the table, write their ; oxidation state and subshell electronic configuration.CompoundsOxidation state Subshell electronic configurationMnCl2MnO2KMnO4b. Write the oxidation number and subshell electronic configuration K, Cl and O.

Answer»

Manganese shows different oxidation states because in manganese 4s and 3d subshell electrons take part in chemical reactions.

a.

CompoundsOxidation state Subshell electronic configuration
MnCl2+21s22s22p63s23p63d5
MnO2+41s22s22p63s23p63d3
KMnO4
Mn2O3
Mn2O7
+7
+3
+7
1s22s22p63s23p6
1s22s22p63s23p63d4
1s22s22p63s23p6

b.

CompoundsOxidation state Subshell electronic configuration
K+11s22s22p63s23p6
Cl-21s22s22p63s23p64s1
O-21s22s22p6


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