EASY
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Several blocks of magnesium are fixed to the bottom of a ship to

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Important Questions on The s-Block Elements

EASY
s-block element which cannot be qualitatively confirmed by the flame test is
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The element whose salts cannot be detected by flame test is.
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Ion having highest hydration enthalpy among the given alkaline earth metal ions is:
MEDIUM
Consider the following ionization enthalpies of two elements 'A' and 'B'.
 
Element Ionization enthalphy kJ/mol
  1st 2nd 3rd
A 899 1757 14847
B 737 1450 7731


Which of the following statements is correct?
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The ion having the highest mobility in aqueous solution is
MEDIUM
Identify the weakest oxidizing agent among the following
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A piece of Mg ribbon is heated to redness in nitrogen atmosphere and the treated with water. The gas evolved is
EASY
Which of the following has the lowest melting point?
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In the flame test of a mixture of salts, a green flame with blue centre was observed. Which one of the following cations may be present?
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Which of the following alkali metals has the lowest melting point?
EASY
The pair of s-block metals, which gives crimson colour to the flame is:
MEDIUM

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): Lithium salts are hydrated.
Reason (R) : Lithium has higher polarising power than other alkali metal group members.

In the light of the above statements, choose the most appropriate answer from the options given below :

MEDIUM
The alkaline earth metal nitrate that does not crystallise with molecules is:
EASY
For alkali metals, which of the following trends is incorrect?
MEDIUM

Identify the correct statements about alkali metals.

A. The order of standard reduction potential (M+ | M) for alkali metal ions is Na > Rb > Li.

B. CsI is highly soluble in water.

C. Lithium carbonate is highly stable to heat.

D. Potassium dissolved in concentrated liquid ammonia is blue and paramagnetic.

E. All alkali metal hydrides are ionic solids.

Choose the correct answer from the options given below

HARD
Choose the correct order of density of the alkali metals
EASY
Which one of the following alkaline earth metal ions has the highest ionic mobility in its aqueous solution?
MEDIUM

Match List-I with List-II

 

List - I

(Elements)

 

List - II

(Properties)

(a) Ba (i) Organic solvent soluble compounds
(b) Ca (ii) Outer electronic configuration 6 s2
(c) Li (iii) Oxalate insoluble in water
(d) Na (iv) Formation of very strong monoacidic base

Choose the correct answer from the options given below: