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Chemical Bonding and Molecular Structure
Why is hydrogen molecule more stable than hydrogen atom?
Every system in this universe tends to attain stability by lowering its energy. Similarly, hydrogen also tends to gain stability. Therefore two moles of hydrogen atoms combines by releasing 435 KJ energy to form one hydrogen molecule. This means that hydrogen molecules are more stable than hydrogen atom as it has less energy than a hydrogen atom.
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What is electrovalency?
What bond is present in MgCl2 molecules?
Two elements A and B have the electronic configuration as:
A = 1s22s22p63s2 and B = 1s22s22p5
Write the empirical formula of the substance containing A and B.
What type of bonding would you expect between:
(i) a metal and a non-metal
(ii) a non-metal and another non-metal?
Give reasons in one or two sentences for the observation that in their compounds non-metals form anions and not cations.
Out of Na and K, which will form a more stable ionic bond?
Which will have a greater lattice enthalpy: NaCl or MgO?
Is a covalent molecule always formed between two similar atoms?
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