Answer:
The modern periodic table is arranged on order of increasing atomic number.
Explanation:
Modern periodic law states that the position of an element in the periodic table is a function of its atomic number.Atomic number is the number of electon(s) in a neutral atom and it determines the number of electon in the outermost shell of an atom called Group of an atom and also atomic determines the number of electonic shells called Period
this is opposed to the old periodic table in which elements were arranged based on their mass number
Answer:- Ca = +2, S = +6 and O = -2
Solution:- There are certain rules for oxidation numbers. As per the rule, oxidation number of alkaline earth metals in their compounds is +2.
Oxidation number of oxygen in it's compounds is -2(except peroxides) and the sum of oxidation numbers of all the elements of a neutral compound is zero.
Since, Ca is +2 and O is -2, the oxidation number of S could easily be calculated for the given compound as:
Let's say the oxidation number of S in 
is 
. Let's make the algebraic equation and solve it.
Hence. the oxidation number of Ca is +2, O is -2 and S is +6.
<span>Weight measured as a force in Newtonsis best described by the answer that is listed under option C. It is a measure of gravitational force on an object. So, interestingly an item with a specific mass of say 120KGs on earth would weigh 1200 N but on the moon only weigh 200 N due to the smaller gravitational force.</span>
Considering a reaction:
A → B
The rate equation may be described as:
r = -k[A]ⁿ
Taking the natural log,
ln(r) = -nln([A]) + ln(k)
Therefore, the only time the graph of ln[A] vs time will be a straight line is when the order of the reaction is 0, meaning the reaction is independent of reactant concentration.
