2. Chapter: 1 Lesson: 1 Question: If a nucleus were the size of the eraser on the end of a pencil (diameter = 0.125 in) what is the diameter with a nucleus this size? (Give your answer in feet.) Hint: What is the ratio of the atom diameter to the diameter of the nucleus? (See Figure F01-1-1) See this sample problem if you need help.

The correct way to write the isotopes 2Na, AI, Kr, 19r in hyphenated form is sodium-24, aluminum-29, krypton-73, iridium- 194. A True B) False

14:37 x 5문 ☺ T 4G a) An element has 2 isotopes. The first has the following configuration: 29c²-. The second isotope has one less neutron. Write the formula of second isotope in the 4Xe- format. b) An element has a mass number of 20, it has 9 neutrons and has lost an electron. Write the isotope in the 4Xe format. c) How many electrons would a neutral atom have in the nucleus if it had 4 protons and 4 neutrons? d) Write the electron configuration of a carbon atom that has gained 2 electrons. Add a caption... e) A strange sample has 2 isotopes with abundances 24.5% and 74.5%. The atomic masses of the isotopes are 205.974 and 207.657. Calculate the atomic mass of the material and propose what the material might be? > Status (Custom)

If the nucleus of an atom took up 50% of the volume (instead of 0.1%) what do you think the scatter plot of the particles would look like? (Imagine the detector unrolled so that 180 degrees shows particles going straight through and O degrees and 360 degrees show particles that bounce right back to the detector.) 1. 180 360

Can you explain this??

The nuclear atom model put forward by Ernest Rutherfort is based on Rutherford's observation of the scattering behavior of alpha particles sent onto a thin gold plate. Which of the following is incorrect? 3 - a) Most of the alpha particles are backscattered after hitting the gold plate. O B) Most of the positively charged alpha partieles passed through the gold plate without any seattering. NS) The nucleus, where the protons are together, occupies a very small volume. O D) The positively charged protons inside the atom are concentrated in the nucleus. O TO) Few of the positively charged alpha particles hit the gold plate and are scattered back at a large angle.

Answer second question. Use first question as a reference

Calculate the atomic mass to four significant figures for carbon, given the following data: C-12 has a mass of 12.00000 amu, abundance of 98.89%. C-1 has a mass of 13.00335 amu, abundance of 1.110%.

Which atom(s) are isotopes? Explain your answer.

If a stable atom has 6 protons and 9 neutrons, the atomic number would be ________.   Group of answer choices 15 9 3 6