Question

The average atomic mass of a sample element x is 80.006u . what is its percentage of 35 x and 35 and 35 (81)

Answer 1

Answer:

Let the number of protons in the element be x. ∴ Number of neutrons in the element

= x + 31.7% of x

= x + 0.317 x

= 1.317 x

According to the question,

Mass number of the element = 81

∴ (Number of protons + number of neutrons) = 81

The atomic symbol of the element is

81_35BR

Explanation: