Single Choice

Which of the following example is not correctly matched?

ATwo most abundant element -Fe, Al.
BTwo metals which occur in native state -Au, Pt.
CTwo metals which can occur in combined and native state both - Zn, Fe.
Correct Answer
DNone of these.

Solution

A few elements like carbon, sulphur, gold, and noble gases, occur in the free state while others are found in combined forms in the earth’s crust. Elements vary in abundance. Among metals, aluminium is the most abundant. Iron is the second most abundant metal in the earth’s crust. It forms a variety of compounds and their various uses make it a very important element. It is one of the essential elements in biological systems as well. $$Fe$$ and $$Zn$$ is not available in both combined and native state and hence option C is the correct answer.

SIMILAR QUESTIONS

d - block and f - block Elements

Elements which generally exhibit variable oxidation states and form colored ions are ___________.

d - block and f - block Elements

Transition metals are often paramagnetic owing to:

d - block and f - block Elements

Transition metals are less reactive than alkali metals because they have:

d - block and f - block Elements

Identify the metal that forms colourless compounds.

d - block and f - block Elements

$$V_2O_5$$ reacts with alkalies as well as acids to give:

d - block and f - block Elements

Metallic radii of some transition elements are given below. Which of these elements will have the highest density? Element $$Fe$$ $$Co$$ $$Ni$$ $$Cu$$ Metallic radii/pm 126 125 125 128

d - block and f - block Elements

Which one of the following ions is the most stable in aqueous solution? (At. No. are: $$ Ti = 22, V = 23, Cr = 24, Mn = 25$$)

d - block and f - block Elements

The elements of $$3d$$ transition series are given as : $$Sc,\ Ti,\ V,\ Cr,\ Mn,\ Fe,\ Co,\ Ni,\ Cu,\ Zn$$ Which element is soft and why?

d - block and f - block Elements

Name the type of elements , which have their Two outermost shell incomplete - ...............

d - block and f - block Elements

The highest magnetic moment is shown by the transition metal ion with which of the following outermost electronic configuration?

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