(a)
Interpretation:
The element sodium has to be classified as noble gas representative element or transition metals and also has to be indicated as metal or non-metal or metalloid.
Concept Introduction:
Metals:
Metals are the elements which are shiny materials and good conductors of heat and electricity. All metals are solids at room temperature except for mercury, which is a liquid.
Non-metals:
Nonmetals are the elements which do not have a shiny appearance and non-metals are generally poor conductors of heat and electricity.
Metalloids:
Metalloids are the elements which have properties intermediate between metals and non-metals. Only seven elements are categorized as metalloids.
Representative elements:
- Representative elements are the chemical elements in the group-1, group-2 and in the groups from 13 to 18. Representative elements are also known as group-A elements or s-block elements and p-block elements or main group elements.
- s-block elements have their valence electrons in the outermost s-orbitals and are in two types as alkali metals and alkaline earth metals. Alkali metals are group-1 whereas alkali earth metals are group-2 elements.
- p-block elements have their valence electrons in the outermost p-orbitals. Almost all the p-block elements are non-metals including some metalloids.
Transition elements:
- Transition elements are chemical elements that have unpaired d electrons at least in a stable cation.
- Transition elements include d block and f block elements.
- Transition elements are in the groups 3 to 12.
(b)
Interpretation:
The element Nitrogen has to be classified as noble gas representative element or transition metals and also has to be indicated as metal or non-metal or metalloid.
Concept Introduction:
Refer to part (a).
(c)
Interpretation:
The element Molybdenum has to be classified as noble gas representative element or transition metals and also has to be indicated as metal or non-metal or metalloid.
Concept Introduction:
Refer to part (a).
(d)
Interpretation:
The element Radium has to be classified as noble gas representative element or transition metals and also has to be indicated as metal or non-metal or metalloid.
Concept Introduction:
Refer to part (a).
(e)
Interpretation:
The element Arsenic has to be classified as noble gas representative element or transition metals and also has to be indicated as metal or non-metal or metalloid.
Concept Introduction:
Refer to part (a).
(f)
Interpretation:
The element Neon has to be classified as, noble gas representative element or transition metals and also has to be indicated as metal or non-metal or metalloid.
Concept Introduction:
Refer to part (a).
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EBK FOUNDATIONS OF COLLEGE CHEMISTRY
- Hydrazine 1H2NNH22, hydrogen peroxide (HOOH), andwater 1H2O2 all have exceptionally high surface tensionscompared with other substances of comparable molecularweights. (a) Draw the Lewis structures for these three compounds.(b) What structural property do these substanceshave in common, and how might that account for the highsurface tensions?arrow_forward(a) What atoms must a molecule contain to participatein hydrogen bonding with other molecules of the samekind? (b) Which of the following molecules can formhydrogen bonds with other molecules of the same kind:CH3F, CH3NH2, CH3OH, CH3Br?arrow_forward(a) Which kind of intermolecular attractive force is shownin each case here? (b) Predict which of the four interactions is the weakest.arrow_forward
- Based on the type or types of intermolecular forces, predictthe substance in each pair that has the higher boiling point:(a) propane (C3H8) or n-butane (C4H10), (b) diethyl ether(CH3CH2OCH2CH3) or 1-butanol (CH3CH2CH2CH2OH),(c) sulfur dioxide (SO2) or sulfur trioxide (SO3), (d) phosgene(Cl2CO) or formaldehyde (H2CO).arrow_forwardIf water were a linear molecule, (a) would it still be polar, and (b) would the water molecules still be able to form hydrogen bonds with one another?arrow_forward2S03(g) →2SO2(g) + O2(g); AH° =arrow_forward
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