p-Block Elements

Which of the statements given below is incorrect?

The formation of the oxide ion, O2\(-\)(g) from oxygen atom requires first an exthermic and then an endothermic step as shown below:
O(g) + e\(-\) \(\to\) O\(-\)(g);  \(\Delta\)fHo = \(-\)141 kJ mol\(-\)1
O\(-\)(g) + e\(-\) \(\to\) O...

Acidity of diprotic acids in aqueous solutions increases in the order

Which statement is wrong?

Identify the incorrect statement, regarding the molecule XeO4 :

Which of the following does not give oxygen on heating?

Which one of the following molecules contains no \(\pi\) bond?

Which is the strongest acid in the following?

The basic structural unit of silicates is

Which of the following structure is similar to graphite?

Which of these is not a monomer for a high molecular mass silicone polymer?

In which of the following compounds, nitrogen exhibits highest oxidation state?

Which of the following statements is not valid for oxoacids of phosphorus?

Sulphur trioxide can be obtained by which of the following reaction?

In which of the following arrangements the given sequence is not strictly according to the property indicated against it?

The Lassaigne's extract is boiled with conc. HNO3 while testing for halogens. By doing so it

Name the two type of the structure of silicate in which one oxygen atom of [SiO4]4\(-\) is shared?

Which of the following statements is incorrect?

Which of the following oxide is amphoteric?

Which one of the following molecular hydrides acts as a Lewis acid?

The tendency of BF3, BCl3 and BBr3 to behave as Lewis acid decreases in the sequence

The correct order of increasing bond angles in the following species is

Oxidation states of P in H4P2O5, H4P2O6, H4P2O7 are respectively

How many bridging oxygen atoms are present in P4O10?

The straight chain polymer is formed by

The stability of +1 oxidation state among Al, Ga, In and Tl increases in the sequence

Among the following which is the strongest oxidising agent?

The angular shape of ozone molecule (O3) consists of

Which of the following anions is present in the chain structure of silicates?

Which one of the following orders correctly represents the increasing acid strengths of the given acids?

Which of the following oxidation states are the most characteristic for lead and tin respectively?

In which of the following molecules are all the bonds are not equal?

The correct order regarding the electronegativity of hybrid orbitals of carbon is

Which of the following is the most basic oxide?

Which one of the following oxides is expected to exhibit paramagnetic behaviour?

What is the correct relationship between the pH of isomolar solutions of sodium oxide, Na2O (pH1), sodium sulphide, Na2S (pH2), sodium srlenide, Na2Se (pH3) and sodium telluride Na2Te (pH4)?

Which one of the following orders correctly represents the increasing acid strengths of the given acids?

Among K, Ca, Fe and Zn, the element which can from more than one binary compound with chlorine is

Which one of the following statements about the zeolite is false?

Which one of the following statements is not true?

Which one of the following compounds is not a protonic acid?

Which of the following statement is true?

Which compound is electron deficient?