Concept explainers
(a)
Interpretation:
The non-hydrogen atom in each case should be identified and the molecular formula for each hydride should be written.
Concept introduction:
Hydrogen can form only one bond. So, atom with more than one bond is the non-hydrogen atom. The second row elements contain Lithium, Beryllium, Boron, Carbon, Nitrogen, Oxygen, fluorine and neon.
(b)
Interpretation:
An electron-dot structure for each hydride should be drawn. For which hydride there is a problem in drawing the structure should be determined.
Concept introduction:
Electron-dot structure represents valence electrons of an atom by dots and show how they are distributed in a molecule. Every atom tries to a complete valence shell or to achieve noble gas configuration by making bonds with other atoms.
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CHEMISTRY-TEXT
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