Draw Lewis Structure & Total # of Valence Electrons (include charges en appropriate species when needed) NF, N. 5 F: F-N: 878 NO₂ N: 5 = 24e- 0:603)+1 :6: N-O: SIH. St: 4 = 8 H: 1(4) H H-Si-H 1 H #of Electron Groups Around Central Atom 3 Electron Pair Geometry Name skal ekxhe Number of Atoms Around Central Atom 1) Draw 3-dimensional Molecular Structure 2) Give Molecular Geometry Name 3) Show bond angles 4) bond dipoles & dipole moment Is molecules polar or nonpolar? NA (ionic)

For each of the following chemical symbols, determine the number or element symbol that goes in the appropriate position. If this atom of aluminum has 10 electrons and 14 neutrons, what value should X be in the chemical symbol? YAIX MacBook Air 1 4 2 +/- 5 7 8 ? L 0 6 9

esc Calculate the mass, in grams, of a single platinum atom (mpt = 195.08 amu). Express your answer using four significant figures. View Available Hint(s) lock VD] ΑΣΦ Provide Feedback Submit ! 1 0 F1 Q C A 1242 @ 2 F2 W S #3 ? 80 F3 g E Z X D $ 4 t 2 Q F4 R 67 5⁰ % 5 F ON F5 T

esc = O MEASUREMENT AND MATTER Organization of the Periodic Table Read each description in the first column of the table below. If any chemical element with atomic number of 92 or less matches the description, check Yes and enter the chemical symbol of an element that matches. Otherwise check No in the second column. An element in Period 4 and Group 1A. A nonmetal in Group 7A. An alkaline earth metal with a lower atomic number than tin. L 1 description A main-group element in Period 2. Explanation Ö F1 Q 2 W Check # 3 20 F3 E Does any element with ZS 92 match the description? Yes O Yes O Yes O Yes $ 4 F4 O No O No O No O No R % 5 If you checked yes, give the symbol of an element with Z ≤ 92 that matches. X F5 T 0 0 MacBook Air ^ Ś 6 F6 Y & 7 F7 Ⓒ2022 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center | Accessibility * 8 FB 9 19 0 1/5 P -

What does "X" represent in the following symbol? 65 29 X O dysprosium O copper O nickel O terbium O silicon

Which of the following is true about subatomic particles? Neutrons have no charge and are the lightest subatomic particle. Protons are a positively charged subatomic particle. Neutrons are a negatively charged particle located in the nucleus of an atom. The mass of a neutron nearly equals the mass of a proton. Electrons are negatively charged and are the heaviest subatomic particle. None of these are accurate Protons are positively charged and the lightest subatomic particle.