m.iqbal 12 ipa 1 kelimpahan unsur periode 4 di alam

Summary

In this presentation, Muhammad Iqbal, a student from class 12 IPA 1, discusses the abundance of transition elements from period 4 in nature. He explains the electron configurations of these elements, including Scandium, Titanium, Cobalt, Nickel, Copper, Chromium, Manganese, Iron, and Zinc. Each element's occurrence in the Earth's crust is highlighted, with references to specific minerals and their significance. The presentation provides an insightful look at the presence and economic value of these transition elements in nature, touching on their various forms and importance in different geological settings.

Takeaways

• 😀 Scandium (Sc) is very rare in nature, with an abundance of only 0.0025% in the Earth's crust.
• 😀 Titanium (Ti) is widely distributed in the Earth's crust, constituting about 0.6% of the Earth's mass.
• 😀 Cobalt (Co) is rare but found in mineral forms like smaltite (CoAs₂).
• 😀 Nickel (Ni) ranks 24th in abundance in the Earth's crust, often found with arsenic, antimony, and sulfur.
• 😀 Copper (Cu) is rarely found as a metal but is commonly found in sulfide forms such as cuprite (Cu₂O).
• 😀 Chromium (Cr) is a hard metal found in minerals like chromite (FeCr₂O₄) in regions such as Sumatra and Papua.
• 😀 Manganese (Mn) is found in mineral forms like pyrolusite (MnO₂) and is abundant in Sumatra, Java, and Papua.
• 😀 Iron (Fe) is one of the most abundant and inexpensive metals in nature, primarily found in ores like hematite (Fe₂O₃).
• 😀 Zinc (Zn) is commonly found in sulfide, carbonate, and silicate mineral forms, such as zinc blende (ZnS).
• 😀 The transition elements of period 4, like Titanium, Cobalt, and Iron, are critical in various industrial and geological processes.

Q & A

What is the main topic of the presentation?

The main topic of the presentation is the abundance of transition elements in Period 4 of the periodic table in nature.

What are transition elements?

Transition elements are elements whose electron configuration ends in the d or f sublevel. They include elements like Scandium, Titanium, Vanadium, Chromium, Manganese, Iron, Nickel, Copper, and Zinc.

What is the significance of Scandium in terms of its abundance?

Scandium is a rare element in nature, with an abundance of only 0.0025% in the Earth's crust. It is commonly found in compounds with a +3 oxidation state.

How abundant is Titanium in the Earth's crust?

Titanium is relatively abundant, making up about 0.6% of the Earth's crust. It is commonly found in minerals like Titanium dioxide (TiO2).

What is the abundance of Cobalt in nature?

Cobalt is relatively rare in nature but can be found in minerals like smaltite (CoAs2), and it is produced economically when its concentration is sufficient.

Where is Nickel found in the Earth's crust?

Nickel is found in the Earth's crust at the 24th most abundant position. It is often found in ores along with arsenic, antimony, and sulfur.

What are the properties of Copper and how is it commonly found?

Copper is a reddish metal that is not very abundant in nature. It is often found in a combined form with other elements like sulfur, with cuprite (Cu2O) being one of its minerals.

What is the abundance and occurrence of Chromium in nature?

Chromium is a hard, white metal found as chromium ore, chromite (FeCr2O4), in several regions such as Sumatra, Kalimantan, and Sulawesi.

How abundant is Manganese in nature?

Manganese is found abundantly in the Earth's crust and is mined in regions like Sumatra, Kepri, and Kalimantan. It is found in minerals like pyrolusite (MnO2).

What is the occurrence of Iron in nature?

Iron is a common metal and is found in nature mainly in the form of iron ore. It is one of the most affordable and widely known metals.