Choice (30 points)- Give the best ansower for each of the following qoei which o

Question

Choice (30 points)- Give the best ansower for each of the following qoei which of the following statements is false? The firstword in the-eofabinary molecular compound isthe name ofthe element opperng chemical formula, including a prefis to indicate the aumber of atoms of that clemen in dhe olecuke b. A compound whose formula ends in Os is a hexaoxide rather than a pentoxide c. If an element has no prefis in the mame of a binary molecular compound, you may asume ferst in the one atom of that element in the molecule that there is only d. The same two noemetals often form more than one binary compound e. The numerical peefix used in chemical mames for the number 2 is di 2. Which of the following defines a comect relationship for electromagnetie radiation 3. The electronic geometry (orbital goometry)is The arrangement of lone pairs around the ceniral atom in a molecule bThe arangement of regions of high electron density around the central atom in a molecule C. The arangement of atoms around the central atom in a molecule. d. The arrangement of H atoems around the central atom in a molecule e. None of the above Which of the following most accurately describes what is depicted in the image to the righr? 4 a an energy level b. an s-shell c a d-subshell d. a d-orbital e ap-subshell 5. Consider the following image of two atoms electron and the circles represen the nuclei. The bond is best described as covalent a. nonpolar ionic b. metallic c polar ionic d. coordinate covalent The Bohr model of the atom assumes that which of the following quantities for the electron in a quantized? i. Speed, i. Direction of spin axis, ili Energy; iv. Radius of its orbit. a. ini and iv 6. d. L,ii, and iv , , and i c. isi only Which of the following properties is typically used to predict the type of bond that forms between two elements? None of these properties b. land iai b. atomic radius c. ionization energy d. Metallic character e.

Explanation / Answer

Ans 1 : b) A compound whose formula ends in O5 is a hexaoxide rather than a pentoxide.

The name of the compound is determined by the number of atoms present in the compound. So if the number is 1 , mono is used , di is used for 2 , and so pento is used for 5 and hexa is used for 6.

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