Chinese Zodiac consists of 12 animals representing different years. Birth year determines zodiac sign based on lunar calendar. Four Pillars of Destiny include year, month, day, and hour
There are 118 elements on the periodic table. Elements are identified by their atomic number, which equals the number of protons. Elements are arranged in order of increasing atomic number
Caesium is a soft, silvery-golden alkali metal with melting point of 28.5°C. It is the softest solid at room temperature with hardness of 0.2 Mohs. Reacts explosively with water even at −116°C. Has largest atomic radius among measured elements at 260 picometres
Strontium is a soft, yellowish alkaline earth metal with atomic number 38. Forms dark oxide layer when exposed to air. Melting point is 777°C, boiling point 1377°C. Density is 2.64 g/cm³, intermediate between calcium and barium
IUPAC has officially identified and named 118 chemical elements. Elements are defined by specific number of protons in atomic nucleus. Periodic table visualizes all 118 elements by chemical properties. Elements can be organized by proton number or other properties. List format can be linear or arranged by chemical symbols
Mercury is a liquid metallic element with atomic number 80. Has lowest boiling point of any stable metal at 356.73°C. Melts at −38.83°C and volume decreases by 3.59% upon freezing