D and f block Flashcards
(27 cards)
What are the general characteristics of d-block elements?
D-block elements are known for their ability to form variable oxidation states, colored compounds, and complex ions.
Which elements are classified as d-block elements?
The d-block elements include transition metals from Scandium (Sc) to Zinc (Zn), covering groups 3 to 12.
True or False: All d-block elements are metals.
True.
Fill in the blank: The last electron in d-block elements enters the ___ subshell.
d
What is the significance of the variable oxidation states in d-block elements?
Variable oxidation states allow d-block elements to participate in a wide range of chemical reactions and form various compounds.
What type of compounds do d-block elements typically form?
D-block elements typically form coordination complexes and colored compounds.
Name one property that distinguishes f-block elements from d-block elements.
F-block elements are characterized by the filling of the f subshell and include the lanthanides and actinides.
Which series of f-block elements are known as lanthanides?
The lanthanides include elements from Lanthanum (La) to Lutetium (Lu).
What is a common use of lanthanides?
Lanthanides are commonly used in the production of strong permanent magnets and phosphors for LED lights.
True or False: Actinides are all radioactive.
True.
Which element is considered the first actinide?
Actinium (Ac).
What is the primary oxidation state of lanthanides?
The primary oxidation state of lanthanides is +3.
Fill in the blank: The f-block elements include ___ and ___.
lanthanides and actinides.
What is the role of d-block elements in catalysis?
D-block elements often act as catalysts due to their ability to change oxidation states and form complex ions.
Name one d-block element that is commonly used in industry.
Iron (Fe) is commonly used in construction and manufacturing.
What property of transition metals leads to their characteristic colors?
The presence of unpaired d electrons and the ability to absorb specific wavelengths of light.
True or False: All f-block elements are found naturally in significant quantities.
False.
What is the electron configuration pattern for d-block elements?
The electron configuration pattern for d-block elements is (n-1)d^1 to (n-1)d^10.
Fill in the blank: The maximum oxidation state of d-block elements can go up to ___ in some cases.
+7
What is a key feature of the lanthanide contraction?
The lanthanide contraction refers to the gradual decrease in ionic radii of lanthanides with increasing atomic number.
Name a common application of actinides.
Uranium (an actinide) is used as fuel in nuclear reactors.
Which d-block element is known for its use in electrical contacts?
Copper (Cu) is widely used in electrical contacts due to its excellent conductivity.
What is the relationship between d-block elements and their complex ions?
D-block elements can form complex ions due to their ability to accept electron pairs from ligands.
True or False: The f-block elements are primarily used in the production of nuclear energy.
True.
