Answer:
Explanation:
Group Most Likely Ionic Charge Number of Valence Electrons
I +1 1
II +2 2
III +3 3
IV +4 or -4 4
V -3 5
VI -2 6
VII -1 7
VIII 0 8
For elements in group IV and above, their ionic charge is (8-number of their valence electrons.)
1978 to 2004 is <em>26 years</em>.
Every 5.23 years, half of our 200-gram sample decays.
It has reached its half life ~4.97 times.
We use this formula to find our new amount:
Every time it reaches its half life, it will be halved...the fractional exponent there is to pick up minute differences like in our 4.97.
The answer is deformation of rocks. hope it helps :)
The oxidation number for S in the compound SO3 is +6 (option D). Details about oxidation number can be found below.
<h3>What is oxidation number?</h3>
Oxidation number of an element is the hypothetical charge of an atom within a molecule.
The oxidation number of elements in a compound adds up to the overall charge of that compound.
According to this question, O has an oxidation number of -2 in SO3, the oxidation number of S can be calculated as follows:
x - 2(3) = 0
x - 6 = 0
x = 6
Therefore, the oxidation number for S in the compound SO3 is +6.
Learn more about oxidation number at: brainly.com/question/15167411
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Answer:
exothermic entropy is increased
Explanation:
An exothermic process is one whose rate increases when the temperature is decreased. Hence if a decrease in temperature favours the dissolution of more solute at equilibrium, then the process is exothermic.
Similarly, the dissolution of a solute in a solvent increases the disorderliness (entropy) of the system because of the increase in the number of particles present. Hence once a solute in dissolved, the entropy of the system increases.