Two times 100 years = 200 years is half life
Answer:
Physics is the science of matter and how matter interacts.
<h2>Hope it helps you...</h2>
<h3>Answer:</h3>
Option-A " The intermolecular forces holding the caffeine molecules together are weaker than the ionic bonds in CuCl₂ ".
<h3>Explanation:</h3>
There are two types of interactions among the atoms and molecules. One are known as intramolecular forces while the other are known as intermolecular forces.
Examples of Intramolecular forces are ionic bonds and covalent bonds e.t.c. while examples of intermolecular forces are hydrogen bond interactions, dipole-dipole interactions e.t.c.
Remember that intramolecular forces ar far more greater in strength than the intermolecular forces. Hence, in given statement the interactions between Caffeine molecules are intermolecular forces while, that between Cu and Cl ions in CuCl₂ are intramolecular forces.
Some of the columns have a number on it and it tells you how many valence electrons the elements in the column have.
