Answer:
Magnesium is the correct answer
Explanation:
It is magnesium because as we move down the periodic table group, atomic sizes increase which is as a result of lesser forces of attraction between nucleus and valence of an atom which makes the atom to be prone to leave as electrons so easily, elements become more reactive.
But as we move along the period , atomic sizes decrease because there is a more force of attraction between nucleus of an atom and it valence electrons making it less reactive just as the case in magnesium. Other elements are more reactive than it across the group.
Answer:
When the average kinetic energy of its particles increases, the object's thermal energy increases. Therefore, the thermal energy of an object increases as its temperature increases.
By observing the light of distant galaxies
From the pulp and paper industry, it is known as bulking state of polymer (swelling of polymer). The paper is made mainly from zellulose, and the zellulose is a amorphous-crystalline polymer. In the water there is restricted intercrystalline swelling, when the macromolecules of zellulose enlarge the distance between each other, and the molecules of water fill this space. As the result, swelled zellulose loses its strength and can be easily teared, so because that. When that water hits the paper, it tears more easily than anything because of those intermolecular forces.
