Given that the percentage abundance of the isotope `._(10)^(20)N` is 90 % and that of the isotope `._(10)^(22)Ne` is 10 %, calculate the average atomic mass of neon.

Bromine occurs in nature mainly in the form of two isotopes ._(35)^(79)Br and ._(35)(81)Br . If the abundance of ._(35)^(79)Br isotope is 49.7 ^% and that of ._(35)^(81)Br isotope is 50.3 %, calculate the average atomic mass of bromine.

The relative abundance of various isotopes of silicon is as Si (28) = 92.25%, Si (29) = 4.65% and Si (30) = 3.10%. Calculate the average atomic mass of silicon.

The natural isotopic abundace of ^10B is 19.60 % and ^11B is 80.40 %. The exact isotopic masses are 10.13 and 11.009 respectively. Calculate the average atomic mass of boron.

The relative abundance of various isotopes of silicon is as:Si-28=92.23%,Si-29=4.67% and Si-30=3.10%. Calculate the average atomic mass of silicon.

The relative abundance of two isotopes of an element with atomic weight 85 and 87 is 75% and 25% respectively. Then calculate the average atomic weight of element

The relative abundance of two isotopes of an element with atomic weight 85 and 87 is 75% and 25% respectively. Then calculate the average atomic weight of element

B has two isotopes 10B (19%) and 11B( 81%) . What is the atomic mass of B .