Chemistry test 1 Q2

Elements that are characterized by the filling of P orbitals are classified as___. A. Groups 3A through 8A B. Transition metals C. Inner transition metals D. Groups 1A and 2A

A. Groups 3A through 8A

Which of the following elements has the smallest ionic radius? A. Lithium B. Potassium C. Oxygen D. Sulfur

A. Lithium (1st period aka closest to far left is always smaller)

Each period in the periodic table corresponds to __. A. A principal energy level B. An energy sublevel C. An orbital D. A suborbital

A. A principal energy level

What is the element with the lowest electronegativity value? A. Cesium B. Helium C. Calcium D. Fluorine

A. Cesium

Which of the following elements has the smallest atomic radius? A. Sulfur B. Chlorine C. Selenium D.Bromine

B. Chlorine

Which subatomic particle plays the greatest part in determining the properties of an element? A. Proton B. Electron C. Neutron D. All of the above

B. Electron

What element in the second period has the largest atomic radius? A. Carbon B. Lithium C. Potassium D. Neon

B. Lithium

Of the following elements, which one has the smallest first ionization energy? A. Boron B. Carbon C. Aluminium D. Silicon

C. Aluminum

What is another name for transitional metals? A. Noble gases B. Group A elements C. Group B elements D. Group C elements

C. Group B elements

The modern periodic table is arranged in order of increasing atomic __. A. Mass B. Charge C. Number D. Radius

C. Number

For Group 2A metals, which electron is the most difficult to remove? A. 1st B. 2nd C. 3rd D. All the electrons are equally difficult to remove

C.3rd (It's more difficult to remove 3 than 1 electron)

What is the element with the highest electronegativity value? A. Cesium B. Helium C. Calcium D. Fluorine

D. Fluorine (Noble gases don't count, thats why Helium isn't the answer)

Atomic size generally ____.

Decreases as you move from left to right across a period

What causes the shielding effect to remain constant across a period?

Electrons are added to the same principal energy level

Why is the second ionization energy greater than the first ionization energy?

It is more difficult to remove a second electron from an atom.

How does atomic radius change from top to bottom in a group in the periodic table?

It tends to increase

The metals in Groups 1A, 2A, & 3A____.

Lose electrons when they form ions.

What is the energy required to remove an electron from an atom in the gaseous state called?

ionization energy

How many electrons does the ion Ca+2 contain?

it contains 18 electrons (Atomic number - 2)