Chemistry Ch. 6 Periodic Table & Elements

Atomic radius is defined as the distance from the center of the atom's nucleus to ________.

Which is not a physical or chemical property of an alkali metal?

Atomic radius _______ when moving down a group and _________ across the periods from left to right.

Oxygen, nitrogen, carbon, and sulfur are all _______.

Which property measures the attraction of bonded atoms to electrons?

Metalloids have characteristics of both metals and nonmetals.

Who was credited with devolping the first ordered table of elements?

What do halogens form when they combine with metals?

The periodic trend for first ionization energy is the opposite of atomic radii.

Which of the following is not a periodic feature of the elements on the periodic table?

What periodic trend plays a central role in predicting which atoms chemically combine with each other?

Helium, neon, argon, krypton, xenon, and radon are all halogens.

The elements that are placed along the stairstep line are the __________.

None of the noble gases form compounds with other elements.

Which of the following elements is the most reactive as well as the most electronegative?

Why do elements in the same group have similar physical and chemical properties?

Helium, neon, argon, krypton, xenon, and radon all fall into which group?

Which property measures the energy required to remove and outermost electron?

Semiconductors can also be called ________.

In every period of the periodic table, beginning from the left side, each succeeding element has ________.

Calcium is in lower left section of periodic table, and chlorine is in upper right. Which has a smaller atomic radius?

Metals are generally gases or soft solids.

What form of energy did Henry Moseley use to determine the atomic numbers of elements?

Existing as a diatomic molecule, which gas is tasteless, odorless, and accounts for ~78% of the earth's atomsphere?

What is the name for the f-block elements found in the periodic table?

The carbon group elements have all of the following properties except:

Which element is ~21% of the earth's atmosphere, the most abundant element in earth's crust, and essential for life?

High electronegativities are associated with large ionization energies and high electron affinities.

Generally, atomic radii increase when moving down a group or column in the periodic table.

Noble gases have the largest ionization energies because they have full outer shells.

Lithium is in Group 1 of the periodic table. Flourine is in Group 17. Which has the greater electronegativity?

Which group would have an element with a silvery luster, conducts electricity well, and is highly reactive?

Which is the lightest and most abundant element in the universe, extremely flammable in airs, and helps produce ammonia?

The atomic law states that the properties of elements vary periodically with their atomic numbers.

How does the size of a metal atom compare to its ion?

Graphite and diamond are both composed of the element carbon.

Which of these is not typically found in a cell on the periodic table?

Elements with atomic numbers greater than that of uranium are called _______ elements.

Copper, nickel, zinc, platinum, and mercury are all examples of __________.

In general, where are the nonmetals located on the periodic table?

What is the only metal that is a liquid at room temperature?