Elements of Group 1 and group 2 in the periodic
table contain elements so reactive that they are never found in the free state
<u>Explanation</u>:
The metals in group 1 of periodic table consisting of 'alkali metals' which include lithium, potassium, sodium, rubidium, Francium and caesium. They are highly reactive because they have low ionisation energy and larger radius. The group 2 metals consist of 'alkaline earth metals' which include calcium, strontium, barium, beryllium, radium and magnesium. These alkaline earth metal have +2 oxidation number, hence are highly reactive.
These both group metals are mostly reactive and so are never found in a free state. When they are exposed to air they would immediately react with oxygen. Hence, are stored in oils to avoid oxidation.
Answer:
Electronegativity difference between 2 atoms
Explanation:
1. If the electronegativity difference (usually called ΔEN) is less than 0.5, then the bond is nonpolar covalent.
2. If the ΔEN is between 0.5 and 1.6, the bond is considered polar covalent
3. If the ΔEN is greater than 2.0, then the bond is ionic.
The answer is B. Because reactions are what goes in. Products are what comes out
Answer:
One mole of sulfuric acid consists of one mole of sulphur.
Explanation:
This is because in the molecule of sulfuric acid there is only one atom of sulphur that is present. As a result of this since in case of one mole of sulfuric acid there should be only one 1 mole of sulphur.
According to the molar concept one mole of sulphur means 6.023 x10^ 23 atoms of sulphur is present in one complete mole of sulfuric acid. in addition to this the molecule also consists of 2 moles of hydrogen and 4 moles of oxygen in 1 mole of sulfuric acid
to know more about sulfuric acid,
. Calculate the mass (in g) of 0.500 mol of sulfuric acid (H2SO4 ...
