Chapter 4: Chemical Bonds & Electron Arrangement

D. Metals

A "sea of electrons" normally exist in: A. non-polar covalent molecules B. Ionic salts C. Noble gases D. Metals

C. A salt

Another name for an ionic compound is: A. A non-metal B. A diatomic compound C. A salt D. A polyatomic ion E. None of these

D. Electron

As you move from left to right across the periodic table, each element has 1 more ______ than the element before it. A. Atom B. Family C. Neutron D. Electron E. Energy level

C. Te

Choose the element whose valence electrons would be easiest to remove in a chemical reaction: A. O B. S C. Te D. Se

C. Na

Choose the element whose valence electrons would be hardest to remove in a chemical reaction. A. Rb B. K C. Na D. Cs

A. 36 core and 2 valence

How many core electrons and how many valence electrons do atoms Sr possess? A. 36 core and 2 valence B. 18 core and 20 valence C. 38 core and 87 valence D. 32 core and 8 valence

3

How many dots would be placed around the B symbol in its Lewis Dot structure?

1

How many dots would be placed around the Na symbol in its Lewis Dot structure?

18

How many electrons can the 3rd energy level hold, maximum?

32

How many electrons can the 4th energy level hold, maximum?

C. Gain 3

How many electrons will nitrogen gain or lose to obtain a noble gas configuration of electrons? A. Lose 7 B. Lose 5 C. Gain 3 D. Gain 4

C. Non-polar

If a bond between 2 atoms involves an equal sharing of electrons between the 2 atoms, the bond is said to be: A. Metallic B. Even C. Non-polar D. Ionic

B. It has 8 valence electrons

If an atom obeys the octet rule it means that: A. It has 8 protons B. It has 8 valence electrons C. It has a total of 8 electrons D. It has 8 particles in the nucleus

C. Electrons

The distribution of ________ in an atom determines the stability in that atom. A. Physical properties B. Protons C. Electrons D. Neutrons

A. Stability

The driving force that causes atoms to reach with one another is the desire for an increase in ________. A. Stability B. Metallic property of the atom C. The size of the atom D. The number of electrons

C. A covalent bond

The type of bond that exists between 2 fluorine atoms in a molecule of diatomic fluorine is: A. A dispersion bond B. An ionic bond C. A covalent bond D. A diatomic bond

B. It is the maximum for a particular energy level

What is special about the number of electrons that each noble gas contains? A. Noble gases need to undergo chemical reactions to gain more electrons B. It is the maximum for a particular energy level C. It is the minimum for a particular energy level D. None of the above

B. Xe

Which of the following elements is a noble gas? A. I2 B. Xe C. O2 D. H2 E. Br2

E. S^3-

Which of the following ions would be unlikely to exist, based on the octet rule? A. Ca^2+ B. Na^1+ C. Mg^2+ D. F^- E. S^3-

C. C

Which one of the following elements does not exist naturally as a diatomic molecule? A. O B. F C. C D. H E. N

B. AlBr3

Write the formula for the salt that forms from the following pair of elements: aluminum (Al) and bromine (Br) A. Al3Br B. AlBr3 C. AlBr2 D. AlBr