Match the columns A and B. A B (a) Helium (i) Hg (b) Mercury (ii) He (c) Copper (iii) Pb (d) Calcium (iv) P (e) Phosphorus (v) Cu (f) Lead (vi) Ca

Helium is a chemical element with the symbol He and atomic number 2. Its boiling point is the lowest among all the elements. Mercury is a chemical element with the symbol Hg and atomic number 80. It is commonly known as quicksilver. Copper is a chemical element with the symbol Cu and atomic number 29. It is a soft, malleable, and ductile metal with very high thermal and electrical conductivity. Calcium is a chemical element with the symbol Ca and atomic number 20. As an alkaline earth metal, calcium is a reactive metal that forms a dark oxide-nitride layer when exposed to air. Phosphorus is a chemical element with the symbol P and atomic number 15. Elemental phosphorus exists in two major forms, white phosphorus and red phosphorus. Lead is a chemical element with the symbol Pb and atomic number 82. Lead is soft and malleable, and also has a relatively low melting point. A B (a) Helium (ii) He (b) Mercury (i) Hg (c) Copper (v) Cu (d) Calcium (vi) Ca (e) Phosphorus (iv) P (f) Lead (iii) Pb