37
Zirconium
Zr
40
91 22
Element
Symbol
Atomic
Molar
Number
mass/
 (g mol–1)
The value given in parenthesis is the molar mass of the isotope of largest known half-life Elements, their Atomic Number and Molar Mass
APPENDIX I
Rationalised 2023-24
142
Chemistry
Common Unit of Mass and Weight
1 pound = 453 59 grams
1 pound  = 453