Major periodic trends include electronegativity, ionization energy, electron affinity, atomic radii, ionic radius, metallic character, and chemical reactivity. Periodic trends are specific patterns in the properties of chemical elements that are revealed in the periodic table of elements. Boiling points increase as the number of carbons is increased. The influence of each of these attractive forces will depend on the functional groups present. The relative strength of the four intermolecular forces is: Ionic > Hydrogen bonding > dipole dipole > Van der Waals dispersion forces. Which of the following trend is correct for boiling point? For the transition metals, boiling and melting points mostly increase as you move down the group, but they decrease for the zinc family.
For Groups 1 and 2, the boiling and melting points decrease as you move down the group. What is the trend of melting and boiling point of the elements of short periods as we move from left to right in a periodic table?Īnswer: Different groups exhibit different trends in boiling and melting points. Greater the force of attraction greater will be the melting and boiling points. Melting and boiling points increases down the group due to the increase in size of atoms and by increasing size London dispersion forces increases. Why does boiling point increase as you go down the periodic table? The number of electrons which each atom can contribute to the delocalized “sea of electrons” increases. Melting and boiling points increase across the three metals because of the increasing strength of their metallic bonds. What is the trend in boiling point as you go across a period? On descending a group the atomic size increases. On crossing a period in the Periodic Table the atomic size decreases. This is due to a decrease in the forces of attraction between the atoms. The melting and boiling points of the Group 1 elements decrease on descending the group. What is the trend of melting and boiling point in periodic table?
2 Why does boiling point increase as you go down the periodic table?.1 What is the trend of melting and boiling point in periodic table?.
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