Atoms combine because they tend to complete their octets or duplets in the case of H, Li and Be. Another reason for the combination of atoms is the lowering of enthalpy that takes place when atoms combine together.
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3.
Can ionic bond be formed between similar atoms?
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4.
Why two helium atoms do not combine to form He2?
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5.
What are 'Lewis structures'?
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6.
Name the conditions for the formation of an ionic bond between two atoms.
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7.
What is crystal lattice?
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8.
What is electrovalency?
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9.
What bond is present in MgCl2 molecules?
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10.Write Lewis dot symbols for atoms of the elements Mg, Na, B, O, N, Br.
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