Complete the following table: Complete the following for the compound cobalt(III

Question

Complete the following table:

Complete the following for the compound cobalt(III) chromate.

Use the References to access important values if needed for this question. The element nitrogen has two stable isotopes, nitrogen-14 with an atomic mass of 14.0031 u and nitrogen-15 with an atomic mass of 15.0001 u. From the atomic mass of N = 14.01 u one can conclude that: O nitrogen-15 has the highest percent natural abundance O both isotopes have the same percent natural abundance O nitrogen-14 has the highest percent natural abundance Submit Answer & Next

Explanation / Answer

If we assume equal abundanvce of N-14 and N-15, then atomic mass of N will simply be the average of atomic masses of the two isotopes: atomic mass N = (14.0031 + 15.0001)/ 2
   = 14.5016 u
But the atomic mass of N is 14.01 u which is less than the average. Hence, it can easily be concluded that the N-14 has the higher natural abundance. option c is correct.

Ca+2 Calcium ion ; F- Fluoride ion ; Fe+2 iron (II) ion ; Cu+ Copper (I) ion/ Cuprous ion:

I am assuming no in formula refers to oxidation no.
Co2(CrO4)3 is fromed by combining of Co3+ and (CrO4)2-. The Oxidation no of Co3+ is +3.
The oxidation no. of O is -2, Let oxidation no. of Cr be x, Then x + (4*-2) = -2: x= +6
Therefore oxidation no of chromium is +6.
  
  

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