Why are the second ionisation energies o...

Why are the second ionisation energies of alkaline earth metals much smaller than those of alkali metals ?

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The densities of alkaline earth metals are much smaller than those of alkali metals.

Assertion : The alkaline earth metal hydroxides are more basic than the corresponding alkali metal. Reason : The ionisation enthalpies of alkaline earth metals are much lower than those of alkali metals.

Alkaline earth metals show:-

The ionisation enthalpy of alkaline earth metals is

The first ionization energies of alkaline earth metal are higher than those of the alkali metals. This is because:

The outer electronic configuration of alkaline earth metals is

The first ionisation enthalpies of the alkline earth metals are higher than that of alkali metals but second ionisation ethalpies are smaller, why?

The correct order of hydration energy of alkaline earth metal ions is

(a). Which alkaline earth metals do not give characteristic colour to the Bunsen flame? (b). Why alkaline earth metals do not form tripositive ions? (c ). Why alkaline earth metals are diamagnetic, but alkali metals are paramagnetic? (d). Why the first inonisation enthaply pf alkaline earth matals is higher than those of corresponding alkali metals? (e). Why alkaline earth metals are less electropositive than corresponding alkali metals?

(a) Why alkaline earth metals are harder, have higer melting ponts and higher densities than the alkali metals? (b). Why the atoms of alkaline earth metals are smaller than the corresponding alkali metals? (c ). Why alkaline earth metals have high electrical and thermal conductivities? (d). What is black ash? (e). Why the variation in physical properties of alkaline earth elements is not as regular as in the case of alkali metals?

ICSE-THE s - BLOCK ELEMENTS-TRUE OR FALSE. TYPE QUESTIONS (State whether the following statements are True or False:

The density of alkali metals increases from Li to Cs.
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'Each alkali metal is the most electropositive element in its period'....
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The correct order of hydration enthalpies of alkali metal ions is:
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Li is used in photoelectric cells.
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K, Rb and Cs form mainly superoxides.
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Why are lithium halides partially covalent ? Explain with examples.
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Inspite of very high ionisation energy, lithium is the strongest reduc...
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When an alkali metal dissolves in liquid ammonia the solution can acqu...
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The densities of alkaline earth metals are much smaller than those of ...
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Why are the second ionisation energies of alkaline earth metals much s...
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Why do alkaline earth metals and their compounds impart characteristic...
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The flame test with a salt P gave a brick red flame. What is the catio...
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Be(OH)2 is
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BaCl2 is a low melting volatile solid.
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Assertion : Among alkaline earth metals, Be predominantly forms covale...
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Why do lithium and sodium not occur in free state in nature ?
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Lithium forms alloys with a number of metals. Why?
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Sodium acts as a strong reducing agent. Why?
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Hydrated magnesium chloride on heating gives magnesium oxide.
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Plaster of Paris is chemically calcium sulphate monohydrate.
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