Lewis structure and vsepr

Which is the correct electron dot symbol for an aluminum atom in the ground state?

B.

Which is the correct electron dot representation of atom of sulfur in the ground state.

C.

Which is the electron dot symbol of an atom of boron in the ground state?

D.

which pair of elements form an ionic bond with each other?

KCl

Which Lewis electron-dot diagram correctly represents a hydroxide ion?

a.

Which of the following Lewis dot structures represents the compound methane (CH4)?

a.

Which of the following models correctly represents the compound phosphorus trichloride?

a.

What is the total number of valence electrons in atom of phosphorus in the ground state?

a. 5

Based on the VSEPR Theory, what is the molecular geometry of C02

a. linear

Which electron dot diagram represents H2?

b.

which compound contains ionic bonds?

b.

why is the compound sodium chloride stable?

b. sodium loses one electron and chlorine gains one electron

which lewis electron-dot diagram is correct for C02?

c

Below are the four ball-and-stick models representing compounds. Which of these models best represents ammonia (Nh3)?

c.

The correct electron dot formula for hydrogen chloride is?

c.

Which Lewis electron-dot diagram represents a nitrogen atom in the ground state?

c.

Which is the electron dot symbol for a chlorine atom in the ground state?

c.

Which of the following atoms has six valence electrons? a. magnesium b. silicon c. sulfur d.argon

c. sulfur

Which kind of bond is formed when two atoms ns share electrons to form a molecule?

d.

which electron-dot symbol represents an atom of argon in the ground state?

d.

Which of the following statements best explains why atoms bond?

d. Atoms bond to become more chemically stable

How many bonds are made by each carbon atom in the molecule shown above?

d. four

The chemical structure of formaldehyde is shown below. What is the geometry around the carbon atom?

d. trigonal planar