calcium-48
Word Rarity
Rare
Frequency: Zipf frequency 3.78 in modern English
13
Scrabble Score
7
Letters
4
Syllables
6
Unique Chars
Meaning
noun
A naturally-occurring isotope of calcium, 4820Ca, with 20 protons and 28 neutrons. It decays very slowly, with a half-life of 4.3x10¹⁹ years. Because it is unusually neutron-rich, it is popular for the manufacture of superheavy elements.
Uncountable