Chapter 6 Wrap Up

Front

What is the atomic radius?

Back

The atomic radius is the distance from the nucleus of an atom to the outermost shell of electrons.

Front

Which element has the largest atomic radius among the following: Ca, Mn, Ga, Se?

Back

Calcium (Ca) has the largest atomic radius.

Front

What is the name of group 2 elements in the periodic table?

Back

Group 2 elements are called alkaline earth metals.

Front

What type of ions do alkali metals form?

Back

Alkali metals form +1 ions.

Front

What letter is found in the bottom right corner of all metalloids on the periodic table?

Back

The letter 'M' is found in the bottom right corner of all metalloids.

Front

Why does the atomic radius decrease as you move across a period from left to right?

Back

The atomic radius decreases because more protons are added to the nucleus, which pulls the electron shells closer.

Front

What are metalloids?

Back

Metalloids are elements that have properties of both metals and nonmetals.

Front

List three properties of alkaline earth metals.

Back

1. They are shiny and silvery-white. 2. They are less reactive than alkali metals. 3. They have higher melting points than alkali metals.

Front

What is the general trend of ionization energy across a period?

Back

Ionization energy generally increases as you move from left to right across a period.

Front

What is the significance of the periodic table's group number?

Back

The group number indicates the number of valence electrons in the elements of that group.