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Lithium, beryllium, boron, chlorine...

Lithium, beryllium, boron, chlorine

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Chlorine
Chlorine is placed in period 3 while other are placed in period 2 of the modern periodic table.
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Lithium forms

The three stes of elements are given below (i) Boron, aluminium, gallium, beryllium (ii) Boron, aluminium, gallium, germanium (iii) Boron, aluminium, thallium, rubidium Which of the above contains groups of elements whose properties are similar in many respect to group 13 elements?

Lithium and beryllium, the first members of alkali metals group and alkaline earth metals group, show anomalous behaviour due to the small sizes of their atoms and ions, high ionisation enthalpies, high polarizing power and absence of vacant d-orbitals in their valence shell. Lithium resembles magnesium while beryllium resembles aluminium due to diagonal relationships. Lithium is the only alkali metal which forms nitride directly. Why?

Lithium and beryllium, the first members of alkali metals group and alkaline earth metals group, show anomalous behaviour due to the small sizes of their atoms and ions, high ionisation enthalpies, high polarizing power and absence of vacant d-orbitals in their valence shell. Lithium resembles magnesium while beryllium resembles aluminium due to diagonal relationships. Complete the reactions: BaO + NaOH to

Lithium and beryllium, the first members of alkali metals group and alkaline earth metals group, show anomalous behaviour due to the small sizes of their atoms and ions, high ionisation enthalpies, high polarizing power and absence of vacant d-orbitals in their valence shell. Lithium resembles magnesium while beryllium resembles aluminium due to diagonal relationships. Why is LiCl soluble in organic solvents?

Discuss the structure of beryllium chloride in different states.