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Scandium has no variable valency because it has a relatively simple electron configuration, with only one electron in its outermost shell (3s² 3p¹). As it primarily exhibits a +3 oxidation state, it tends to lose these three valence electrons without forming other stable oxidation states. The absence of d-electrons in its valence shell limits the ability to form multiple oxidation states, making its chemistry straightforward compared to transition metals, which often exhibit variable valency due to the involvement of d-orbitals.
What else can I help you with?
Why scandium has valency of 3 whereas its outer shell has only two electrons?
scandium belongs to 3d series and in scandium in addition to 2 electrons in 4s one electron of 3d subshell also takes part in bonding so its valency is three despite of only two electrons in outer shell. remember valency is no. of electrons taking part in bonding
Does oxygen exihibit variable valency?
it does. for example in H2O oxygen has a valency 2 while in hydrogen peroxide H2O2 oxygen exhibits valency 1
Why some elements have variable valencies?
Certain elements combine with other atoms, donating, accepting or sharing electrons in different proportions depending on the nature of the reaction. For example, iron combines with oxygen to form ferrous oxide as well as ferric oxide. In the formation of ferrous oxide, iron exhibits a valency of +2, whereas in ferric oxide, it has a valency of +3. This is termed variable valency
Why transition elements show variable valency?
Transition elements contain 2 outermost shells incompleted including the valence shell. But when it reacts with other, it shares,gives or accepts elctrons from its inner shells.
What color is scandium?
what is the color of scandium?
Why scandium has valency of 3 whereas its outer shell has only two electrons?
scandium belongs to 3d series and in scandium in addition to 2 electrons in 4s one electron of 3d subshell also takes part in bonding so its valency is three despite of only two electrons in outer shell. remember valency is no. of electrons taking part in bonding
What non-metals has no variable valency Zn Cu Fe N?
Out of the non-metals you listed, nitrogen (N) is the only one that does not exhibit variable valency. Zinc (Zn), copper (Cu), and iron (Fe) can exhibit variable valency in certain compounds.
How many electrons are in the scandium valence shell?
The element scandium has 21 electrons. However, most of these occupy the inner orbitals. The only electrons in the valence shell are those in the 2s orbital. Since there are two such electrons, scandium has 2 valence electrons.
What do you mean by variable valency?
Variable valencies are the valencies which can change e.g. Fe (iron) can either have the valency of 2 (Fe II) or 3 (Fe III)
Does oxygen exihibit variable valency?
it does. for example in H2O oxygen has a valency 2 while in hydrogen peroxide H2O2 oxygen exhibits valency 1
What is valency iron?
Iron has variable valence. It can be either 2 or 3.
Does gold exhibit a variable valency?
No, gold typically exhibits a fixed valency of +1. It commonly exists in its elemental form with a valency of 0 when not bonded to other elements.
What charge is copper 2 solphide?
Copper II sulphate has variable valency properties, which translates to variable charges.
Why does a d-block elements a variable valency?
because they have one valence electron
What is mean by valency?
Variable valencies are the valencies which can change e.g. Fe (iron) can either have the valency of 2 (Fe II) or 3 (Fe III)
Does aluminum hane variable valency?
Yes. Mostly 3+ Ions, but 2+ ions can be encountered.
Why some elements have variable valencies?
Certain elements combine with other atoms, donating, accepting or sharing electrons in different proportions depending on the nature of the reaction. For example, iron combines with oxygen to form ferrous oxide as well as ferric oxide. In the formation of ferrous oxide, iron exhibits a valency of +2, whereas in ferric oxide, it has a valency of +3. This is termed variable valency
