Answer:
a.
can be made up of a combination of different elements.
Answer:
group I: alkali metals
group II (beryllium to radium): alkaline earth metals
group II (scandium to zinc , yttrium to cadmium, lanthanoid series to mercury, actinoid series to copernicium): transition metals
group VII (fluorine to astatine): halogens
group VIII: (helium to radon): noble gases
Explanation:
Answer:
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Answer:
∆H = negative and ∆S = positive.
Explanation:
The reaction given in the question is spontaneous at room temperature ,
hence ,
The the gibbs free energy , i.e. ,∆G will be negative for spontaneous reaction
According to the formula ,
∆G = ∆H -T∆S
The value of ∆G can be negative , if ∆H has a negative value and ∆S has a positive value , because , T∆S , has a negative sign .
Hence , the answer will be , ∆H = negative and ∆S = positive.
