Question 1: The following questions are based on elements and isotopes. The following expression will help you: 2xe- b) For the 13B3- isotope, what is the value of Z? c) An element has a mass number of 19, it has 7 neutrons and has lost an electron. Write the isotope in the xe format. d) An element has 2 isotopes. The first has the following configuration: Si?-. The second isotope has one less neutron. Write the formula of second isotope in the Xe format. e) A strange sample has 3 isotopes with abundances 1.4%, 24.1% and 74.5%. The atomic masses of the isotopes are 203.973, 205.974 and 207.657. Calculate the atomic mass of the material and propose what the material might be? f) If an atom loses a proton, what will happen?

Question 1: The following questions are based on elements and isotopes. The following expression will help you: 2xe- b) For the 13B3- isotope, what is the value of Z? c) An element has a mass number of 19, it has 7 neutrons and has lost an electron. Write the isotope in the xe format. d) An element has 2 isotopes. The first has the following configuration: Si?-. The second isotope has one less neutron. Write the formula of second isotope in the Xe format. e) A strange sample has 3 isotopes with abundances 1.4%, 24.1% and 74.5%. The atomic masses of the isotopes are 203.973, 205.974 and 207.657. Calculate the atomic mass of the material and propose what the material might be? f) If an atom loses a proton, what will happen?

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

Calculate the kinetic energy of a 4.2 x 10^4 kg airplane moving at a speed of 155.ms Round your answer to 2 significant digits.
Need help with homework
A Chemistry 20 student uses a thermometer and a hot plate and measures the boiling point of ethyl alcohol to be 74.3 ºC. Then, she looks in a reference book and finds that the actual boiling point of ethyl alcohol is 78.4 ºC. What is her percent error?
Which of the following compounds has the shortest Xmax? O II OI ||| CONV III IV
What is the mean of the values 8.9, 9.0, 4.0, 7.0, and 3.0? Give your answer to the first decimal place.
Which of the following values for R2 shows the strongest correlation between the X and Y values in a data set? 0.0184 0.0047 0.500 0.981 0.9678
Calculate the equilibrium constant for each of the reactions at 25°C. Standard Electrode Potentials at 25 °C Reduction Half-Reaction E° (V) Fe+(aq) + 3 e → Fe(s) -0.036 Sn²+ (aq) + 2 e → Sn(s) -0.14 2+ Cu" (ag) + 2 е — Cu(s) 0.16 O2 (g) + 2 H2O(1) +4 e¯ →4 OH (aq) 0.40 Cl2(9) + 2 е —2 CI 1.36 I2(s) + 2 e → 2 1 0.54
14.3462 +2.55 Express your answer in appropriate significant figures. — ΑΣΦ ftermitte ΠΡΕΠΕΙ Ν