Formative Test on Using LEDS to Form Binary Ionic Compounds

Use the fake Periodic Table to answer the question. Which of the following has the MOST number of dots in its Lewis Electron Dot Structure?

• Ca

• Da

• Na

• Wa

Use the fake Periodic Table to answer the question. Which information from a real Periodic Table is useful in finding the valence electrons of elements that is missing or simply implied in the fake Periodic Table?

• Block

• Group

• Oxidation state

• Period

Use the fake Periodic Table to answer the question. How would you describe the Lewis Electron Dot Structure (LEDS) for Wi?

• It has 1 valence electron at the 2 corners or directions of its chemical symbol.

• It has 2 valence electrons at the 3 corners or directions of its chemical symbol.

• It has 2 valence electrons at each of the 4 corners or directions of its chemical symbol.

• It has 1 valence electron at the 2 consecutive corners or directions of its chemical symbol; and 2 valence electrons at the remaining 2.

Use the fake Periodic Table to answer the question. Which of the following has NO valence electrons?

• Pe

• Po

• Pu

• An element has a minimum of 1 to a maximum of 8 valence electrons; and never 0.

"In drawing the Lewis Electron Dot Structure (LEDS) for elements with more than 2 valence electrons, it is important to occupy first the available corners/directions before pairing up." This is similar to simulating which principle below?

• Aufbau Principle

• Hund's Rule of Multiplicity

• Pauli's Exclusion Principle

• Any of the 3 principles is correct.

Use the fake Periodic Table to answer the question. Which of the following is MOST likely a nonmetallic element?

• Ca

• Na

• Ra

• Wa

Use the fake Periodic Table to answer the question. Which of the following will have the MOST tendency to lose or give away its valence electrons?

• Bo

• Do

• Po

• Yo

Use the fake Periodic Table to answer the question. How many valence electrons are there in the atom of elements that could become an ion with a -1 charge?

• 5

• 6

• 7

• 8

Use the fake Periodic Table to answer the question. If Na and Da react to form a binary ionic compound, what is the expected chemical formula?

• NaDa

• NaDa2

• Na2Da

• It is impossible for Na and Da to form a compound with each other.

Use the fake Periodic Table to answer the question. How many Bi atom/s is/are need to form 'Birdium Chompide"?

• 1

• 2

• 3

• 4