Video Transcript
Which of the period four d-block
metals is the most abundant in Earth’s crust? (A) Zinc, (B) iron, (C) nickel, (D)
titanium, or (E) copper.
In this question, we need to
identify which listed period four d-block element is most abundant in the Earth’s
crust. Period four metals are an essential
group of elements. They make up around 6.3 percent of
the chemical elements in the sea and Earth’s continental crust.
Now let us talk about the five
chemical elements we can choose from: Ti, titanium; Fe, iron; Ni, nickel; Cu,
copper; and Zn, zinc. Let us begin with zinc. This element is frequently used in
inexpensive batteries and is also used for galvanization to prevent the corrosion of
metals. Zinc makes up 0.0070 percent of the
Earth’s crust.
Now we can move on to iron, which
manufacturers usually extract from iron-containing ores. The iron element is a component of
the steel alloy. Iron makes up 5.63 percent of
Earth’s crust.
The next element is nickel. Nickel is commonly used in
rechargeable batteries and makes up 0.0084 percent of the Earth’s crust.
Titanium is a relatively light
metal, but it has very high strength and is resistant to corrosion. One of the primary uses of titanium
is in the production of titanium–aluminum alloys and titanium dioxide, TiO2, in
sunscreen. Within the Earth’s crust, there is
0.565 percent titanium.
Finally, copper is a well-known
metal used in most countries for electrical wiring because it is a good conductor of
electricity. Copper makes up 0.0060 percent of
the Earth’s crust.
Therefore, the most abundant
element in Earth’s crust from the period four d-block metals listed is (B),
iron.
