Answer: Option (c) is the correct answer.
Explanation:
According to the Born-Lande equation,
E = 
where, 
= Avogadro's constant
r = distance between the anion and cation
M = Medlung constant
= charge on the cation
= charge on the anion
E = lattice energy
According to this expression, lattice energy is inversely proportional to the distance between the cation and anion. And, when we move down a group then there occurs an increase in the atomic radii of the atoms.
As a result, there will occur a decrease in their lattice energy. Since, the anionic part is same in all the given species but the cationic part is different.
In 
the size of magnesium cation is smaller than calcium, barium and strontium ion. Hence, there will be least distance between Mg and Br ions.
Thus, we can conclude that the magnitude of lattice energy will be the highest in .
Without enzymes the nutrients in your food would go to waste which leads to a poor digestion and malnutrition. It’s because enzymes break down the nutrients which use it for energy
<span>There are a number of ways
to express concentration of a solution. This includes molarity. It is
expressed as the number of moles of solute per volume of the solution. To convert the mass of the solute to moles, we use the molar mass of the substance. We calculate as follows:
MOlarity = 4.725 g ( 1 mol / 58.45 g ) / .5 L = 0.162 mol / L</span>
Answer:
Moles to Grams caco3
1 mole is equal to 1 moles CaCO3, or 100.0869 grams.
Most elements are metals. A.
