atomic number 21 Antonyms
No Synonyms and anytonyms found
Meaning of atomic number 21
Wordnet
atomic number 21 (n)
a white trivalent metallic element; sometimes classified in the rare earth group; occurs in the Scandinavian mineral thortveitite
atomic number 21 Sentence Examples
- Scandium, atomic number 21, is a silvery-white transition metal with a high melting point.
- The nucleus of a scandium atom contains 21 positively charged protons.
- Scandium has an atomic mass of 44.956, making it relatively light compared to other transition metals.
- The electron configuration of scandium (1s² 2s² 2p⁶ 3s² 3p⁶ 4s²) gives it three valence electrons.
- Scandium is commonly used in alloys to improve their strength and corrosion resistance.
- The name "scandium" is derived from the Latin word "Scandia," which refers to Scandinavia, where the element was first discovered.
- Scandium is also found in trace amounts in minerals such as thorium and euxenite.
- The atomic number 21 of scandium is determined by the number of protons in its nucleus.
- Scandium forms stable complexes with a wide range of ligands, making it a versatile coordination compound.
- Despite its atomic number 21, scandium exhibits properties of both metals and nonmetals.
FAQs About the word atomic number 21
a white trivalent metallic element; sometimes classified in the rare earth group; occurs in the Scandinavian mineral thortveitite
No synonyms found.
No antonyms found.
Scandium, atomic number 21, is a silvery-white transition metal with a high melting point.
The nucleus of a scandium atom contains 21 positively charged protons.
Scandium has an atomic mass of 44.956, making it relatively light compared to other transition metals.
The electron configuration of scandium (1s² 2s² 2p⁶ 3s² 3p⁶ 4s²) gives it three valence electrons.
