Question

Name of 20 elements with atomic weight nd symbols

Answer 1

hydrogen[1.0079]H
helium[4.0026]He
lithium[6.941]Li
beryllium[9.0122]Be
boron[10.811]B
carbon[12.0107]C
nitrogen[14.0026]N
oxygen[15.9994]O
fluorine[18.9984]F
neon[20.17]Ne
sodium[22.98]Na
magnesium[24.30]Mg
aluminium[26.98]Al
silicon[28.08]Si
phosphorus[30.97]p
sulfur[32.06]S
chlorine[35.4]cl
potasium[39.09]K
argon[39.94]Ar
calcium[40.07]Ca