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Recent questions tagged d-and-f-block-elements

The reaction of concentrated $\text{HNO}_3$ with $\text{Cu}$ or $\text{Ag}$ liberates

asked Jul 31, 2014 by thanvigandhi_1

1 answer

The reaction of dilute $\text{HNO}_3$ with $\text{Cu}$ or $\text{Ag}$ libertaes the gas

asked Jul 31, 2014 by thanvigandhi_1

1 answer

Which of the following statements regarding silver is not correct ?

asked Jul 31, 2014 by thanvigandhi_1

1 answer

Which of the following ores does not contain silver ?

asked Jul 31, 2014 by thanvigandhi_1

1 answer

Which of the following alloys does not contain copper ?

asked Jul 31, 2014 by thanvigandhi_1

2 answers

In the electrolytic refining of copper which statement is False

asked Jul 31, 2014 by thanvigandhi_1

1 answer

Which of the following statements is not correct ?

asked Jul 31, 2014 by thanvigandhi_1

1 answer

Which of the following statements regarding ferric salts is not correct ?

asked Jul 31, 2014 by thanvigandhi_1

1 answer

Which of the following steels does not contain carbon ?

asked Jul 31, 2014 by thanvigandhi_1

1 answer

Which of the following is not the mineral of iron ?

asked Jul 31, 2014 by thanvigandhi_1

1 answer

Cerium (Z = 58) is an important member of the lanthanoids. Which of the following statements about cerium is incorrect?

asked Jul 30, 2014 by balaji.thirumalai

1 answer

What is the general electronic configuration of transiton elements?

asked Jul 29, 2014 by balaji.thirumalai

1 answer

Platinum, palladium, iridium etc., are called noble metals because

asked Jan 31, 2014 by sreemathi.v

1 answer

In photography sodium thiosulphate is used as

asked Jan 30, 2014 by sreemathi.v

1 answer

Which of the following are the causes of Lanthanide contraction?

asked Jan 30, 2014 by sreemathi.v

1 answer

One of the important use of ferrous sulphate is in the

asked Jan 30, 2014 by sreemathi.v

1 answer

In acidic medium one mole of $MnO_4^-$ accepts how many moles of electrons in a redox process ?

asked Jan 30, 2014 by sreemathi.v

1 answer

The property exhibited by only transitional elements

asked Jan 30, 2014 by sreemathi.v

1 answer

In first transition series, the melting point of Mn is low because

asked Jan 30, 2014 by sreemathi.v

1 answer

Vanadium (III) oxide is a strong

asked Jan 30, 2014 by sreemathi.v

1 answer

In which of the following will the ionic radii of chromium be the smallest

asked Jan 30, 2014 by sreemathi.v

1 answer

The transitional metal which form green compound in +3 oxidation state and yellow orange compound in +6 oxidation state is

asked Jan 30, 2014 by sreemathi.v

1 answer

Least reactive metal is

asked Jan 30, 2014 by sreemathi.v

1 answer

Which is most reactive metal

asked Jan 30, 2014 by sreemathi.v

1 answer

Stainless steel does not rust because

asked Jan 30, 2014 by sreemathi.v

1 answer

Lanthanoids are

asked Jan 30, 2014 by sreemathi.v

1 answer

Which statement is true about the transitional elements

asked Jan 30, 2014 by sreemathi.v

1 answer

The equivalent weight of potassium permanganate for acid solution is

asked Jan 30, 2014 by sreemathi.v

1 answer

Which of the following is not true for transition metals.

asked Jan 30, 2014 by sreemathi.v

1 answer

The highest oxidation state of will be

asked Jan 30, 2014 by sreemathi.v

1 answer

Which of the following is the weakest reducing agent

asked Jan 30, 2014 by sreemathi.v

1 answer

Which of the following forms interstitial compounds

asked Jan 30, 2014 by sreemathi.v

1 answer

Transition metals are often paramagnetic owing to

asked Jan 30, 2014 by sreemathi.v

1 answer

Variable valency is shown by

asked Jan 30, 2014 by sreemathi.v

1 answer

Lanthanides and actinides resemble in

asked Jan 30, 2014 by sreemathi.v

2 answers

Which forms coloured salts.

asked Jan 30, 2014 by sreemathi.v

1 answer

Which occurs in nature in free state

asked Jan 30, 2014 by sreemathi.v

1 answer

Which of the following statement is not correct.

asked Jan 30, 2014 by sreemathi.v

1 answer

Which one of the following is reduced by hydrogen peroxide in acid medium

asked Jan 30, 2014 by sreemathi.v

1 answer

Which one of the following is highest melting halide.

asked Jan 30, 2014 by sreemathi.v

1 answer

The atomic numbers of the f-block elements are:

asked Jan 30, 2014 by sreemathi.v

1 answer

Match the following:

asked Jan 30, 2014 by sreemathi.v

1 answer

Consider the following statement, which of the following choices is correct?

asked Jan 30, 2014 by sreemathi.v

1 answer

Match the following catalysts to the transition metal used.

asked Jan 30, 2014 by sreemathi.v

1 answer

For making good quality mirrors, plates of float glass are used. These are obtained by floating molten glass over a liquid metal which odes not solidify before glass. The metal used can be?

asked Jan 30, 2014 by sreemathi.v

1 answer

The standard reduction potentials (E$^{\circ}$ ) of the lanthanides for M$^{+3}$ (aq) + 3e$^{-} \overset{\Delta} \rightarrow$ M (s) all fall between –2.52 V (La) and –2.25 V (Lu). This helps explain which of the following properties of Lanthanides?

asked Jan 30, 2014 by sreemathi.v

1 answer

Formation of interstitial compounds makes the transition metal more:

asked Jan 30, 2014 by sreemathi.v

1 answer

Match the following, where EAN stands for Effective Atomic Number, the number of electrons on the central metal ion, including ligands in the bonding:

asked Jan 30, 2014 by sreemathi.v

1 answer

Which of the following statements about magnetic properties is/are incorrect?

asked Jan 30, 2014 by sreemathi.v

1 answer

If a transition-metal compound absorbs violet radiation of the visible region, its colour would be?

asked Jan 30, 2014 by sreemathi.v

1 answer

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