Chemical Properties and General Characteristics of Alkali Metals
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CHXI10:THE S-BLOCK ELEMENTS

315803 The \(\mathrm{E}^{\circ}\) for \(\mathrm{Cl}_{2} / \mathrm{Cl}^{-}\)is +1.36, for \(\mathrm{I}_{2} / \mathrm{I}^{-}\)is +0.53, for \(\mathrm{Ag}^{+} / \mathrm{Ag}\) is \(+0.79, \mathrm{Na}^{+} / \mathrm{Na}\) is -2.71 and for \(\mathrm{Li}^{+} / \mathrm{Li}\) is -3.04 . Arrange the following ionic species in decreasing order of reducing strength: \(\mathrm{I}^{-}, \mathrm{Ag}, \mathrm{Cl}^{-}, \mathrm{Li}, \mathrm{Na}\)

1 \(\mathrm{Li} < \mathrm{Na} < \mathrm{I}^{-} < \mathrm{Ag} < \mathrm{Cl}^{-1}\)
2 \(\mathrm{Li}>\mathrm{Na}>\mathrm{I}^{-}>\mathrm{Ag}>\mathrm{Cl}^{-1}\)
3 \(\mathrm{Li} < \mathrm{Na}>\mathrm{I}^{-} < \mathrm{Ag}>\mathrm{Cl}^{-1}\)
4 \(\mathrm{Li}>\mathrm{Na} < \mathrm{I}^{-}>\mathrm{Ag} < \mathrm{Cl}^{-1}\)
CHXI10:THE S-BLOCK ELEMENTS

315805 In view of their low ionization energies, the alkali metals are

1 Weak oxidising agents
2 Strong reducing agents
3 Strong oxidising agents
4 Weak reducing agents
CHXI10:THE S-BLOCK ELEMENTS

315809 The alkali metal that reacts with \(\mathrm{C}\) directly at \(1000^{\circ} \mathrm{C}\) to form carbide is

1 \(\mathrm{Li}\)
2 \(\mathrm{Na}\)
3 \(\mathrm{K}\)
4 \(\mathrm{Cs}\)
CHXI10:THE S-BLOCK ELEMENTS

315810 Which of the following is wrong?

1 Reducing character of alkaline earth metals increases from \(\mathrm{Be}\) to \(\mathrm{Ba}\)
2 \(\mathrm{Be}(\mathrm{OH})_{2}\) is amphoteric in nature
3 The solubilities of sulphates and carbonates decrease with increase in atomic number of alkaline earth metals
4 \(\mathrm{BeCl}_{2}\) has much higher M.P. and insoluble in organic solvents
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CHXI10:THE S-BLOCK ELEMENTS

315803 The \(\mathrm{E}^{\circ}\) for \(\mathrm{Cl}_{2} / \mathrm{Cl}^{-}\)is +1.36, for \(\mathrm{I}_{2} / \mathrm{I}^{-}\)is +0.53, for \(\mathrm{Ag}^{+} / \mathrm{Ag}\) is \(+0.79, \mathrm{Na}^{+} / \mathrm{Na}\) is -2.71 and for \(\mathrm{Li}^{+} / \mathrm{Li}\) is -3.04 . Arrange the following ionic species in decreasing order of reducing strength: \(\mathrm{I}^{-}, \mathrm{Ag}, \mathrm{Cl}^{-}, \mathrm{Li}, \mathrm{Na}\)

1 \(\mathrm{Li} < \mathrm{Na} < \mathrm{I}^{-} < \mathrm{Ag} < \mathrm{Cl}^{-1}\)
2 \(\mathrm{Li}>\mathrm{Na}>\mathrm{I}^{-}>\mathrm{Ag}>\mathrm{Cl}^{-1}\)
3 \(\mathrm{Li} < \mathrm{Na}>\mathrm{I}^{-} < \mathrm{Ag}>\mathrm{Cl}^{-1}\)
4 \(\mathrm{Li}>\mathrm{Na} < \mathrm{I}^{-}>\mathrm{Ag} < \mathrm{Cl}^{-1}\)
CHXI10:THE S-BLOCK ELEMENTS

315805 In view of their low ionization energies, the alkali metals are

1 Weak oxidising agents
2 Strong reducing agents
3 Strong oxidising agents
4 Weak reducing agents
CHXI10:THE S-BLOCK ELEMENTS

315809 The alkali metal that reacts with \(\mathrm{C}\) directly at \(1000^{\circ} \mathrm{C}\) to form carbide is

1 \(\mathrm{Li}\)
2 \(\mathrm{Na}\)
3 \(\mathrm{K}\)
4 \(\mathrm{Cs}\)
CHXI10:THE S-BLOCK ELEMENTS

315810 Which of the following is wrong?

1 Reducing character of alkaline earth metals increases from \(\mathrm{Be}\) to \(\mathrm{Ba}\)
2 \(\mathrm{Be}(\mathrm{OH})_{2}\) is amphoteric in nature
3 The solubilities of sulphates and carbonates decrease with increase in atomic number of alkaline earth metals
4 \(\mathrm{BeCl}_{2}\) has much higher M.P. and insoluble in organic solvents
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CHXI10:THE S-BLOCK ELEMENTS

315803 The \(\mathrm{E}^{\circ}\) for \(\mathrm{Cl}_{2} / \mathrm{Cl}^{-}\)is +1.36, for \(\mathrm{I}_{2} / \mathrm{I}^{-}\)is +0.53, for \(\mathrm{Ag}^{+} / \mathrm{Ag}\) is \(+0.79, \mathrm{Na}^{+} / \mathrm{Na}\) is -2.71 and for \(\mathrm{Li}^{+} / \mathrm{Li}\) is -3.04 . Arrange the following ionic species in decreasing order of reducing strength: \(\mathrm{I}^{-}, \mathrm{Ag}, \mathrm{Cl}^{-}, \mathrm{Li}, \mathrm{Na}\)

1 \(\mathrm{Li} < \mathrm{Na} < \mathrm{I}^{-} < \mathrm{Ag} < \mathrm{Cl}^{-1}\)
2 \(\mathrm{Li}>\mathrm{Na}>\mathrm{I}^{-}>\mathrm{Ag}>\mathrm{Cl}^{-1}\)
3 \(\mathrm{Li} < \mathrm{Na}>\mathrm{I}^{-} < \mathrm{Ag}>\mathrm{Cl}^{-1}\)
4 \(\mathrm{Li}>\mathrm{Na} < \mathrm{I}^{-}>\mathrm{Ag} < \mathrm{Cl}^{-1}\)
CHXI10:THE S-BLOCK ELEMENTS

315805 In view of their low ionization energies, the alkali metals are

1 Weak oxidising agents
2 Strong reducing agents
3 Strong oxidising agents
4 Weak reducing agents
CHXI10:THE S-BLOCK ELEMENTS

315809 The alkali metal that reacts with \(\mathrm{C}\) directly at \(1000^{\circ} \mathrm{C}\) to form carbide is

1 \(\mathrm{Li}\)
2 \(\mathrm{Na}\)
3 \(\mathrm{K}\)
4 \(\mathrm{Cs}\)
CHXI10:THE S-BLOCK ELEMENTS

315810 Which of the following is wrong?

1 Reducing character of alkaline earth metals increases from \(\mathrm{Be}\) to \(\mathrm{Ba}\)
2 \(\mathrm{Be}(\mathrm{OH})_{2}\) is amphoteric in nature
3 The solubilities of sulphates and carbonates decrease with increase in atomic number of alkaline earth metals
4 \(\mathrm{BeCl}_{2}\) has much higher M.P. and insoluble in organic solvents
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CHXI10:THE S-BLOCK ELEMENTS

315803 The \(\mathrm{E}^{\circ}\) for \(\mathrm{Cl}_{2} / \mathrm{Cl}^{-}\)is +1.36, for \(\mathrm{I}_{2} / \mathrm{I}^{-}\)is +0.53, for \(\mathrm{Ag}^{+} / \mathrm{Ag}\) is \(+0.79, \mathrm{Na}^{+} / \mathrm{Na}\) is -2.71 and for \(\mathrm{Li}^{+} / \mathrm{Li}\) is -3.04 . Arrange the following ionic species in decreasing order of reducing strength: \(\mathrm{I}^{-}, \mathrm{Ag}, \mathrm{Cl}^{-}, \mathrm{Li}, \mathrm{Na}\)

1 \(\mathrm{Li} < \mathrm{Na} < \mathrm{I}^{-} < \mathrm{Ag} < \mathrm{Cl}^{-1}\)
2 \(\mathrm{Li}>\mathrm{Na}>\mathrm{I}^{-}>\mathrm{Ag}>\mathrm{Cl}^{-1}\)
3 \(\mathrm{Li} < \mathrm{Na}>\mathrm{I}^{-} < \mathrm{Ag}>\mathrm{Cl}^{-1}\)
4 \(\mathrm{Li}>\mathrm{Na} < \mathrm{I}^{-}>\mathrm{Ag} < \mathrm{Cl}^{-1}\)
CHXI10:THE S-BLOCK ELEMENTS

315805 In view of their low ionization energies, the alkali metals are

1 Weak oxidising agents
2 Strong reducing agents
3 Strong oxidising agents
4 Weak reducing agents
CHXI10:THE S-BLOCK ELEMENTS

315809 The alkali metal that reacts with \(\mathrm{C}\) directly at \(1000^{\circ} \mathrm{C}\) to form carbide is

1 \(\mathrm{Li}\)
2 \(\mathrm{Na}\)
3 \(\mathrm{K}\)
4 \(\mathrm{Cs}\)
CHXI10:THE S-BLOCK ELEMENTS

315810 Which of the following is wrong?

1 Reducing character of alkaline earth metals increases from \(\mathrm{Be}\) to \(\mathrm{Ba}\)
2 \(\mathrm{Be}(\mathrm{OH})_{2}\) is amphoteric in nature
3 The solubilities of sulphates and carbonates decrease with increase in atomic number of alkaline earth metals
4 \(\mathrm{BeCl}_{2}\) has much higher M.P. and insoluble in organic solvents
For More Updates join with Us