The periodic table is an ordered way of representing chemical elements. They were ordered according to their atomic number, remember that the atomic number corresponds to the number of protons of the elements.
So the answer will be option C) Atomic Number
The balanced chemical reaction for this would be written as:
2Mg + O2 = 2MgO
We use this reaction and the amount of the reactant given to calculate for the amount of magnesium oxide that is produced. We do as follows:
1.5 g Mg (1 mol / 24.31 g) ( 2 mol MgO / 2 mol Mg ) (40.30 g /1 mol ) = 2.49 g MgO produced
Answer: Density (ρ) = 1.25 gram/liter
Explanation:
= 1.25 gram/liter
The answer is 2.7gm/cm^3 . Density is mass divided by volume .
Ionisation Energy. This is the enthalpy change when I mole of electrons is removed from 1 mole of gaseous ions.
