e Web Note made in Microsoft Edge Chapter 2: EOc Question 3 [References) 1 pt An atom has a very small nucleus surrounded by an electron "cloud." The figure below represents the nucleus with a diameter of about 2 mm and describes the electron cloud as extending over 200 m. If the diameter of an atom is 1 x 10-8 cm, what is the approximate diameter of its nucleus? %3D Question 4 1 pt Question 5 1 pt Nucleus with protons (positive electric charge) and neutrons (no electric charge). Question 6 1 pt Question 7 1 pt Question 8 1 pt Question 9 1 pt Question 10 1 pt Question 11 1 pt Question 12 1 pt Question 13 1 pt Electrons (negative electric charge). The number of electrons and protons is equal in an electrically neutral atom. Question 14 1 pt Question 15 1 pt Diameter = 2 cm Question 16 1 pt Question 17 1 pt Submit Answer Try Another Version 10 item attempts remaining Question 18 1 pt Progress: 2/25 items Due May 13 at 08:55 PM Previous Next Finish Assignment Email Instructor Save and Exit Cengage Learning | Cengage Technical Support e Web Note made in Microsoft Edge Chapter 2: EOC [References) Question 1 1 pt Give the complete symbol (X), including atomic number and mass number, of Question 2 1 pt a. a manganese atom with 27 neutrons. Question 3 1 pt 4X: Question 4 1 pt b. a plutonium atom with 144 neutrons. Question 5 1 pt X: Question 6 1 pt Question 7 1 pt c. a tantalum atom with 108 neutrons. Question 8 1 pt X: Question 9 1 pt Question 10 1 pt Submit Answer Try Another Version 10 item attempts remaining Question 11 1 pt Question 12 1 pt Question 13 1 pt Question 14 1 pt Question 15 1 pt Question 16 1 pt Progress: 2/25 items Due May 13 at 08:55 PM Next Previous Finish Assignment Email Instructor Save and Exit Cengage Learning | Cengage Technical Support

22. Elements that have metallic and non-metallic properties are called a. metalloids b.semi-conductors c. non metals d. alloys Sabne buot olo nomme 23. Which element has an atomic mass of 238.03 amu? a) uranium b) plutonium c) radium апо anousis to his bustl d. neptunium 120 24. Which of the following is not a part of John Dalton's atomic theor a. All natter is made of small, indivisible particles called atoms. b. All the atoms of an element are identical in properties such as size and mas c. Atoms of different elements have the same properties. d. Atoms of different elements can combine in specific ways to form new su 25. An ionic bond forms between a metal and non-metal. A. True

A east.cengagenow.com Chemistry I| X OWLV2 | Online teaching and learning resource from Cengage Learning [References] Use the References to access important values if needed for this Try to complete the missing information for these three isotopes using only the data provided. Isotope #1 • Element Symbol 79 • Nuclear Symbol: Br 35 • Atomic Number • Mass Number • Protons • Neutrons Electrons Isotope #2 • Element Symbol: Fe • Nuclear Symbol • Atomic Number • Mass Number: 55 • Protons • Neutrons • Electrons: 26 Isotope #3 Cengage Learning | Cengage Technical Support

You are excited to know from this class that everything in the world is composed of atoms.  In addition, an atom looks like the solar system.  The _____ are the “planets” in an atom. Group of answer choices a)electrons b)positrons c)neutrons d)protons