1+7018) 5) Wh A) sulfur Answer ( ich of the following elements is found as a mon
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1+7018) 5) Wh A) sulfur Answer ( ich of the following elements is found as a monat species in its most stable form? E) phosphorus B) oxygen C) hydrogen D)argon ich of the following solids would have the highest melting point? A) Nal Answer 7) Which one of these covalent bonds would have the greatest percent io A) H -Br Answer ( B) NaF nic character? List all types of bonding present in the compound NH&NO.; III. nonpolar covalent bond I. ionic bond II. polar covalent bond A)Ionly B) IonlyC) lI only D)I and II E) II and III Answer ( latron (free radical) in which of the following species?Explanation / Answer
5)OPtion D
Argon the stable monoatomic gas among the given options.
All noble gases exista as monoatomic as they have stable octet configuration.
6) option C
MgO is the solid with highest melting point.
Mgis +2 and O is -2 charges. The higher the charge the larger is the lattice energy. Larger lattice energy, larger forces to overcome to melt the solid, hence highest melting point.
7) option D
HF bond has the largest difference in electronegativity , thus possesses most ionic percentage.
8) option D
NH4NO3 is made up of two ions NH4+ and NO3- . thus has ionic bond
in NH4+ each N-H bond is polar covalent bond
similarly in NO3- , each N-O bond is polar covalent bond,
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