. Both element K and element L are found in period 3 of the periodic table. If K is in group 13 while L is in group 15, which of the two
has a greater atomic number? Explain.

 L element has greater atomic number.

Explanation:

The periodic table contains vertical columns called as groups and horizontal rows called as periods.

Period 3 contains 8 elements which are sodium, magnesium , aluminium , silicon , phosphorous , sulphur, chlorine and argon.

K element which belongs to group 13 is aluminium with atomic number of 13 . L element which belongs to group 15 is phosphorous with atomic number of 15.

Thus L element has greater atomic number.

in chemistry, adhesion and cohesion are attractive forces that exist between molecules. they hold the molecules together from each other. they are different in that adhesive force exists between molecules of different substance while cohesive force happens between molecules of same substance.

adhesion between water and glass causes water molecules at the edge of water and glass interface to climb up the wall in a narrow glass tube. this is called capillary action. cohesion is what gives glass its shape and causes water to form a droplet.