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Alkali metal dissolves in liquid ammonia at -33 °C to produce
 

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Important Questions on The s-Block Elements

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Chemistry>Inorganic Chemistry>The s-Block Elements>Chemical Properties of Group 1 Elements
The metal that forms nitride by reacting directly with N2 of air is:
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Chemistry>Inorganic Chemistry>The s-Block Elements>Chemical Properties of Group 1 Elements
Sodium metal on dissolution in liquid ammonia gives a deep blue solution due to the formation of:
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Chemistry>Inorganic Chemistry>The s-Block Elements>Chemical Properties of Group 1 Elements
Dihydrogen is liberated when water reacts with
MEDIUM
Chemistry>Inorganic Chemistry>The s-Block Elements>Chemical Properties of Group 1 Elements
Assertion (A): K, Rb and Cs form superoxides
Reason (R): The stability of superoxides increases form K to Cs due to decrease in lattice energy.
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Chemistry>Inorganic Chemistry>The s-Block Elements>Chemical Properties of Group 1 Elements
Which of the following liberates O2 upon hydrolysis?
MEDIUM
Chemistry>Inorganic Chemistry>The s-Block Elements>Chemical Properties of Group 1 Elements
A s-block element (M) reacts with oxygen to form an oxide of the formula MO2. The oxide is pale yellow in colour and paramagnetic. The element (M) is:
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Chemistry>Inorganic Chemistry>The s-Block Elements>Chemical Properties of Group 1 Elements
Sodium dissolves in liquid NH3 to give a deep blue solution. This is due to;
MEDIUM
Chemistry>Inorganic Chemistry>The s-Block Elements>Chemical Properties of Group 1 Elements
Magnesium is burnt in the air to form A and B. When B is hydrolyzed, C and D are formed. D is the reactant in the manufacture of nitric acid by Ostwald's process. What is C ?
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Chemistry>Inorganic Chemistry>The s-Block Elements>Chemical Properties of Group 1 Elements
The oxide of potassium that does not exist is
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Chemistry>Inorganic Chemistry>The s-Block Elements>Chemical Properties of Group 1 Elements
The order of stability for the super oxides is
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Chemistry>Inorganic Chemistry>The s-Block Elements>Chemical Properties of Group 1 Elements
Which one of the following options is correct pertaining to the below transformations?
Na+NH3l⟶ Coloured solution ⟶ on standing X+Y
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Chemistry>Inorganic Chemistry>The s-Block Elements>Chemical Properties of Group 1 Elements
Name a nitrate that does not yield corresponding metal oxide, nitrogen dioxide on heating.
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Chemistry>Inorganic Chemistry>The s-Block Elements>Chemical Properties of Group 1 Elements
The main oxides formed on combustion of Li, Na and K in excess of air are respectively:
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Chemistry>Inorganic Chemistry>The s-Block Elements>Chemical Properties of Group 1 Elements
Identify the weakest oxidizing agent among the following
MEDIUM
Chemistry>Inorganic Chemistry>The s-Block Elements>Chemical Properties of Group 1 Elements
Magnesium powder burns in air to give
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Chemistry>Inorganic Chemistry>The s-Block Elements>Chemical Properties of Group 1 Elements
A piece of Mg ribbon is heated to redness in nitrogen atmosphere and the treated with water. The gas evolved is
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Chemistry>Inorganic Chemistry>The s-Block Elements>Chemical Properties of Group 1 Elements
The element whose salts cannot be detected by flame test is.
MEDIUM
Chemistry>Inorganic Chemistry>The s-Block Elements>Chemical Properties of Group 1 Elements
When sodium Na metal is dissolved in liquid ammonia NH3, it imparts a blue colour to the solution. This blue coloration is due to:
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Chemistry>Inorganic Chemistry>The s-Block Elements>Chemical Properties of Group 1 Elements
On combustion of Li, Na and K in excess of air, the major oxides formed, respectively, are:
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Chemistry>Inorganic Chemistry>The s-Block Elements>Chemical Properties of Group 1 Elements
A metal on combustion in excess air forms X . X upon hydrolysis with water yields H2O2 and O2 along with another product. The metal is: