For alkali metals , which of the following trends is incorrect?

Hydration energy: Li > Na > K > Rb

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Ionization enthalpy: Li > Na > K > Rb

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Density: Li < Na < K < Rb

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Atomic size: Li < Na < K < Rb

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Solution

The correct option is C
Density: Li < Na < K < Rb

The density of K is lower than that of Na. Thus, option c is incorrect. The correct trend is Li < K < Na < Rb

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Similar questions

The order of decreasing ionisation enthalpy in alkali metals is
(a) Na> Li > K> Rb (b) Rb< Na< K< Li
(c) Li > Na> K> Rb (d) K< Li < Na < Rb

N a, L i, R b,

K

(L i^{\oplus}, N a^{\oplus}, K^{\oplus}, R b^{\oplus})

(L i^{⨁}, N a^{⨁}, K^{⨁}, R b^{⨁})

The correct order of reactivity of alkalimetals towards $H_{2}$ is

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