question 19 (0.5 points) give the formula from the systematic name manganese (vii) selenide __1__ __2__ a…
question 19 (0.5 points) give the formula from the systematic name manganese (vii) selenide __1__ __2__ a. mn2 b. mn c. mn3 d. (cn)2 e. se3 f. (so3)2 g. (c2h3o2)2 h. c2h3o2 i. hso3 j. se7 k. c3 l. po3 m. hpo3 n. h2po3 o. oh p. (oh)2 q. s r. so4 s. (so4)2 t. man3
Answer
Explanation:
Step1: Determine ion charges
Manganese (VII) has a charge of +7 ($Mn^{7+}$), and selenide ion has a charge of - 2 ($Se^{2-}$).
Step2: Use charge - balance
To balance the charges in an ionic compound, we need to find the ratio of cations to anions such that the overall charge is zero. Let the formula be $Mn_xSe_y$. Then $7x-2y = 0$. The smallest whole - number values for $x$ and $y$ that satisfy this equation are $x = 2$ and $y = 7$. So the formula is $Mn_2Se_7$. From the given options, the correct parts are B. Mn and J. Se7.
Answer:
B. Mn, J. Se7