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Ionic Radii and Ionisation Enthalpy (Group 2)

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What is the order of melting point inMgO,CaO,BeO,BaO

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Q. Give the order of melting points:

C a O, F e {C l}_{2}, F e {C l}_{3}

B e O

is insoluble but

B a O

Q. The decreasing order of basic character of

K_{2} O, B a O, C a O

M g O

is ___________.

Q. Arrange MgO, CaO,Sro and BaO in order of increasing lattice energy.

Q. Select the correct order for the given properties -
I) Thermal Stability:

B a S O_{4} > S r S O_{4} > C a S O_{4} > M g S O_{4}

II) Basic Nature:

Z n O > B e O > M g O > C a O

III) Solubility in water:

L i O H > N a O H > K O H > R b O H

IV) Melting point:

N a C l > K C l > R b C l > L i C l

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Ionic Radii and Ionisation Enthalpy (Group 2)

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