EASY
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Regarding chemical behaviour of Li and Mg which of the following statements are correct.

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Important Questions on The s-Block Elements

EASY
Ionic mobility of which of the following alkali metal ions is lowest when aqueous solution of their salt are put under an electric field?
EASY
On heating, LiNO3 gives how many compounds among the following?
Li2O,N2,O2,LiNO2,NO2
HARD
A metal M reacts with nitrogen gas to afford M 3 N M 3 N  on heating at high temperature gives back M and on reaction with water produces a gas B. Gas B reacts with an aqueous solution of CuSO4 to form a deep blue compound. M and B respectively are
EASY
Which of the following elements mostly form covalent compounds?
MEDIUM
Which among the following alkali metal chloride crystallizes in form of hydrate?
EASY
From the given pairs of elements, the correct set of elements that does not possess diagonal relationship is;
EASY
Two elements A and B have similar chemical properties. They don't form solid hydrogencarbonates, but react with nitrogen to form nitrides. A and B, respectively, are :
MEDIUM
Which of following elements does not form amide when reacted with ammonia?
MEDIUM

Identify the ions which form hydrated chlorides from the following:

a) Ba2+
b) Li+
c) Sr2+
d) Cs+
e) Mg2+
f) Rb+
g) Ca2+

EASY
Both lithium and magnesium display several similar properties due to the diagonal relationship; however, the one which is incorrect is:
MEDIUM
Among the statements a-d, the correct ones are:
(a) Lithium has the highest hydration enthalpy among the alkali metals.
(b) Lithium chloride is insoluble in pyridine.
(c) Lithium cannot form ethynide upon its reaction with ethyne.
(d) Both lithium and magnesium react slowly with H2O .
MEDIUM

Given below are two statements:

Statement I : The chlorides of Be and Al have Cl-bridged structure. Both are soluble in organic solvents and act as Lewis bases.

Statement II: Hydroxides of Be and Al dissolve in excess alkali to give beryllate and aluminate ions. In the light of the above statements. Choose the correct answer from the options given below.

EASY

Among the statement (I – IV), the correct ones are:

(I) Be has smaller atomic radius compared to Mg.

(II) Be has higher ionization enthalpy than AI.

(III) Charge/radius ratio of Be is greater than that of Al.

(IV) Both Be and Al form mainly covalent compounds

EASY
An element A of group 1 shows similarity to an element B belonging to group 2. If A has maximum hydration enthalpy in group 1 then B is