The elements of group 1 describe, more clearly then only group of elements, the effects of increasing the size of atoms or ions on the physical and ch

Question

The elements of group 1 describe, more clearly then only group of elements, the effects of increasing the size of atoms or ions on the physical and ch

The elements of group 1 describe, more clearly then only group of elements, the effects of increasing the size of atoms or ions on the physical and chemical properties.The chemical and physical properties of the elements are closely related to their electronic structures and sizes.These metals are highly electropositive and thus form very strong bases, and have quite stable oxo-salts.In the manufacturing of sodium hydroxide, chlorine and sodium carbonate, the sodium chloride is used as starting material.
The following compounds have been arranged in the order of their increasing thermal stabilities.Identify the correct order.
`K_2CO_3(I),Na_2CO_3(II),Rb_2CO_3(III),Li_2CO_3(IV)`
A. IltIIltIIIltIV
B. IVltIIltIIIltI
C. IVltII lt I ltIII
D. IIltIVltIIIltI

Monjur Alahi

5 views

2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

Correct Answer - C
The thermal stabilities of carbonates increase down the group due to increase in metallic character i.e. electropositive character. Further bigger cation stabiliese bigger anion through crystal lattice energy effects.

5 views Answered 2023-02-05 15:29