What occurs in order to break the bond in a cl2 molecule? explanation .

Options for the question;

(1) Energy is absorbed.

(2) Energy is released.

(3) The molecule creates energy.

(4) The molecule destroys energy.

(1) Energy is absorbed.

Explanation:

Using the Method of elimination;

Option 1 - Energy is absorbed to break bonds. Bond-breaking is an endothermic process. This means this option is correct.

Option 2 - This option is incorrect because bond breaking is endothermic in nature. Energy is being absorbed and not released.

Option 3 and 4 - These optons are wrong because energy can neither be created nor destroyed but can change from one form to another.

you need to take a look at the periodic system in order to sort these elements into pairs that would most likely exhibit similar chemical properties. first, you need to find elements that are found in the same group (groups are vertical in the periodic system), and then to see whether they have the same valence number. if they meet these criteria, they will have similar properties.

the first pair: ne (neon) and kr (krypton), are noble gases found in group 8

the second pair: li (lithium) and k (potassium), found in group 1

the third pair: s (sulfur) and te (tellurium), found in group 6