Name the elements of group 17. Describe the trend in the properties of halogens such as:
(a) Bond energy
(b) Ionization enthalpy
(c) Oxidising power
(d) Reactivity and
(e) Reducing power of halogen halides.

Explain the trends in property in halogen family as given under: (i) Ionization enthalpy (ii) Oxidation state (iii) Electron affinity or electron gain enthalpy.

Describe the general trends in the following properties of the elements in groups 13 and 14 (a) Atomic size (b) Ionisation enthalpy (c) Metallic character (d) Oxidation states (e) Nature of halides.

Discuss the following trends in halogens. (a) atomic radius (b) ionisation potential (c) electron affinity and (d) electronegativity.

Which of the following properties of halogens increase with increasing atomic number? (I) Ionization energy (II) Ionic radius (III) Bond energy of the X_(2) molecule (IV) Enthalpy of vaporisation

Categorize these properties into extensive and intensive (a) Temperature , (b) Internal energy ,(c ) Heat, (d ) Density (e) Moar volume , (f) molar enthalpy , (g) viscosity

Categorize these properties into state and path functions. (a) Internal energy , (b) Volume , (c ) Heat , (d) Enthalpy (e) Temperature , (f) Work , (g) Molar heat capacity

Which of the following statements are correct concerning redox properties? (i) A metal M for which E^(@) for the half cell reaction M^(n+)+"ne"^(-)hArrM is very negative will be a good reducing agent. (ii) The oxidizing power of the halogen decreases from chlorine to iodine. (iii) The reducing power of hydrogen halides increases from hydrogen chloride to hydrogen iodide.

The periodicity is related to the electronic configuration. That is, all chemical and physical properties are a manifestation of the electronic configuration of the elements. The atomic and ionic radii generally decrease in a period from left to right. As a consequence, the ionization enthalpies generally increase and electron gain enthalpies become more negative across a period. In other words, the ionization enthalpy of the exterme left element in a period is the least and teh electron gain enthalpy of the element on the exterme right is the highest negative. This results into high chemical reactivity at the two extermes and the lowest in he centre. Similarly down the group, the increase in atomic and ionic radii result in gradual decrease in ionization enthalpies and a regular decrease (with exception in some third period elements) in electron gain enthalpies in the case of main group elements. The loss and gain of electrons can be co-related with the reducting and oxidising behaviour, and also with metallic and non-metallic character respectively, of the elements. The correct order of the metallic character is:

The periodicity is related to the electronic configuration. That is, all chemical and physical properties are a manifestation of the electronic configuration of the elements. The atomic and ionic radii generally decrease in a period from left to right. As a consequence, the ionization enthalpies generally increase and electron gain enthalpies become more negative across a period. In other words, the ionization enthalpy of the exterme left element in a period is the least and teh electron gain enthalpy of the element on the exterme right is the highest negative. This results into high chemical reactivity at the two extermes and the lowest in he centre. Similarly down the group, the increase in atomic and ionic radii result in gradual decrease in ionization enthalpies and a regular decrease (with exception in some third period elements) in electron gain enthalpies in the case of main group elements. The loss and gain of electrons can be co-related with the reducting and oxidising behaviour, and also with metallic and non-metallic character respectively, of the elements. Which of the following statements is correct?

Which of the following properties of IA group metals increases as the atomic number rises: (a) Metallic character (b) Ionic radius (c ) Melting point (d) Density (e ) Ionization potential Correct answer is:-