1) The atomic masses of ^203Tl and ^205Tl are 202.972336 and 204.974410 amu, res

Question

1) The atomic masses of ^203Tl and ^205Tl are 202.972336 and 204.974410 amu, respectively. The average atomic mass of thallium is 204.383 amu. Calculate the natural abundances of these two isotopes

% abundance of ^203Tl?

% abundance of ^205Tl?

2) Determine the mass number of the following

(a) a boron atom with 5 neutrons

(b) a magnesium atom with 14 neutrons

(c) a bromine atom with 46 neutrons

(d) a mercury atom with 116 neutrons

3) write the appropriate nuclear symbol for each of the following isotopes:

(a) Z=11, A=23

(b) Z=28, A=64

(C) Z=50, A=115

(D) Z=20, A=42

show work please

Explanation / Answer

1) ^203Tl-29.534

^205TL-70.485

2)a 10.81

b 26

c 91

d 194.6

3)a Na

b Ni

c Sn

d Ca

Related Questions

Navigate

• Browse (All)
• Browse 1
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.