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Mobile App Chapter 2: Atoms, Molecules, and Ions
Q36E
Use the build a molecule simulation (http://openstaxcollege.org/1/16molbuilding) to repeat Exercise 2.34, but build a molecule with three carbons, seven hydrogens, and one chlorine.
- Draw the structural formula of this molecule and state its name.
- Can u arrange these atoms to make a different molecule? If so, draw its structural formula and state its name.
- How are molecules drawn in (a) and (b) the same? How do they differs? What are they called (the type of relationship between these molecules, not their names)?
Q37E
Using the periodic table, classify each of the following elements as a metal or a nonmetal, and then further classify each as a main-group (representative) element, transition metal, or inner transition metal:
- Uranium
- Bromine
- Strontium
- Neon
- Gold
- Americium
- Rhodium
- Sulfur
- Carbon
- Potassium
Q38E
Using the periodic table, classify each of the following elements as a metal or a nonmetal, and then further classify each as a main-group (representative) element, transition metal, or inner transition metal:
(a) cobalt
(b) europium
(c) iodine
(d) indium
(e) lithium
(f) oxygen
(h) cadmium
(i) terbium
(j) rhenium
Q39E
Using the periodic table, identify the lightest member of each of the following groups:
(a) noble gases
(b) alkaline earth metals
(c) alkali metals
(d) chalcogens
Q3 E
Identify the postulate of Dalton’s theory that is violated by the following observations: 59.95% of one sample of titanium dioxide is titanium; 60.10% of a different sample of titanium dioxide is titanium.
Q40E
Using the periodic table, identify the heaviest member of each of the following groups:
(a) Alkali metals
(b) Chalcogens
(c) Noble gases
(d) Alkaline earth metals
Q41E
Use the periodic table to give the name and symbol for each of the following elements:
(a) The Nobel gas in the same period as Germanium.
(b) The Alkaline earth metal in the same period as selenium.
(c) The Halogen in the same period as lithium.
(d) The Chalcogen in the same period as cadmium.
Q.42E
Use the periodic table to give the name and symbol for each of the following elements:
(a) the halogen in the same period as the alkali metal with 11 protons
(b) the alkaline earth metal in the same period with the neutral noble gas with 18 electrons
(c) the noble gas in the same row as an isotope with 30 neutrons and 25 protons
(d) the noble gas in the same period as gold
Q43E
Write a symbol for each of the following neutral isotopes. Include the atomic number and mass number for each.
(a) the alkali metal with 11 protons and a mass number of 23
(b) the noble gas element with 75 neutrons in its nucleus and 54 electrons in the neutral atom
(c) the isotope with 33 protons and 40 neutrons in its nucleus
(d) the alkaline earth metal with 88 electrons and 138 neutrons
Q44E
Write a symbol for each of the following neutral isotopes. Include the atomic number and mass number for each.(a) the chalcogen with a mass number of \({\bf{125}}\)(b) the halogen whose longest-lived isotope is radioactive(c) the noble gas, used in lighting, with \({\bf{10}}\) electrons and \({\bf{10}}\) neutrons(d) the lightest alkali metal with three neutrons
