The element Cu with atomic number 29 undergoes chemcial reaction to formation with oxidation number +2: Can this element show variable valency? Why?

The element Cu with atomic number 29 undergoes chemcial reaction to formation with oxidation number +2: write down the subshell electronic con-figuration of the ion.

The element Cu with atomic number 29 undergoes chemcial reaction to formation with oxidation number +2: Write downthe chemical formula of one compound formed when this element re-acts with chlorine ("17CI) .

The element Cu with atomic number 29 undergoes chemical reaction to form an ion with oxidation number +2. a) Write down the subshell electronic configuration of this ion? b) Can this element show variable valency? Why? c) Write down the chemical formula of one compound formed when this elemrnt reacts with chlorine (Cl_17)

Name the element with atomic number 119.

The element with atomic number 9 can exhibit oxidation state of:

When the element Fe with atomic number 26 undergo chemical reactions, ions with +3 oxidation state are formed. a) Write the subshell electronic configuration of Fe. b) Write the subshell electronic configuration of the ions formed during chemical reactions. c) Does the element show various oxidation states. Why?

Element with atomic number 56 belongs to which block?

Define atomic number of an element?

The outer most subshell electronic configuration of an element is 3d^54s^2 : This element shos variable oxidation state. Why?