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Minggu, 22 Agustus 2010

structure assigment for class x

ESSAY
1. Explain about ionic bonds !
2. Write the Lewis structure of :
a. LiF
b.CaCl2
3. Predict the ionic compounds formed from the reaction below !
a. 11Na and 16S
b. 13Al and 16S
4. The atomic numbers of A, B, C, and D are 6, 9, 11, and 18.Which pairs of atoms will from ionic bonds ?