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Yttrium (Y) – Element 39 of the periodic table

Yttrium (symbol Y) is element number 39 of the periodic table and belongs to the “Transition metal” category. Its atomic mass is about 88.906, and its phase under standard conditions is Solid. This element sits in period 5 and group 3 of the periodic table, and its electrons are arranged in shells of 2, 8, 18, 9, 2. The short electron configuration of Yttrium is [Kr] 4d¹ 5s². Known uses of Yttrium include Red LEDs, Superalloys and Lasers.

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Properties of Yttrium

Atomic number
39
Chemical symbol
Y
Atomic mass
88.906
Category
Transition metal
Period
5
Group
3
Phase
Solid
Protons
39
Electrons
39
Neutrons (approx.)
50
Electron shells
2, 8, 18, 9, 2
Outer-shell electrons
2
Discovered
Johan Gadolin (1794)

Electron configuration of Yttrium

The electron configuration of Yttrium (Y), with 39 electrons, is shown below. The last shell (shell 5) is highlighted:

Full configuration
1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹ 5s²
Short configuration
[Kr] 4d¹ 5s²
Last shell
5s²

What is electron configuration and how is it written?

Electron shells of Yttrium

Distribution of 39 electrons of Yttrium across shells K to O:

  1. K2
  2. L8
  3. M18
  4. N9
  5. O2

What is a transition metal?

The transition metals are the d-block elements: usually good conductors of heat and electricity, with several oxidation states, and they form colourful compounds and important catalysts.

Uses of Yttrium

Frequently asked questions about Yttrium

What is the atomic number of Yttrium?

The atomic number of Yttrium (Y) is 39; that is, every atom of it has 39 protons.

What is the electron configuration of Yttrium?

The electron configuration of Yttrium (Y) is 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹ 5s²; in short form it is [Kr] 4d¹ 5s², and its last shell is 5s².

What is the chemical symbol of Yttrium?

The chemical symbol of Yttrium is Y.

Where is Yttrium located in the periodic table?

Yttrium is located in period 5 and group 3 and belongs to the “Transition metal” category.

What is the atomic mass of Yttrium?

The atomic mass of Yttrium is about 88.906 (atomic mass units).

What is the phase of Yttrium under normal conditions?

The phase of Yttrium under standard conditions is Solid.

What are the uses of Yttrium?

Uses of Yttrium include Red LEDs, Superalloys and Lasers.

Who discovered Yttrium?

Yttrium was discovered by Johan Gadolin in 1794.

Elements in the same category as Yttrium (Transition metal)

Scandium (Sc)Titanium (Ti)Vanadium (V)Chromium (Cr)Manganese (Mn)Iron (Fe)Cobalt (Co)Nickel (Ni)Copper (Cu)Zinc (Zn)Zirconium (Zr)Niobium (Nb)Molybdenum (Mo)Technetium (Tc)Ruthenium (Ru)Rhodium (Rh)Palladium (Pd)Silver (Ag)Cadmium (Cd)Hafnium (Hf)

See all Transition metals

Yttrium’s group 3 neighbours

Scandium (Sc)

Group 3 of the periodic table