Question

Answer 1

1. a. Lần lượt là: N(I), N(IV), N(V)

b. Lần lượt là: S(IV), S(VI)

c. Lần lượt là: Fe(II), Fe(III), Fe(III)

d. Lần lượt là: Cu(I), Cu(II)

2.a.  \(\overset{\left(I\right)}{Na_2}\overset{\left(II\right)}{O}\)

b. \(\overset{\left(I\right)}{K_2}\overset{\left(II\right)}{SO_4}\)

c. \(\overset{\left(II\right)}{Ba}\overset{\left(I\right)}{Cl_2}\)

d. \(\overset{\left(II\right)}{Ca}\overset{\left(I\right)}{\left(OH\right)_2}\)

e. \(\overset{\left(II\right)}{Mg}\overset{\left(II\right)}{O}\)

f. \(\overset{\left(III\right)}{Al_2}\overset{\left(II\right)}{O_3}\)

g. \(\overset{\left(II\right)}{Zn}\overset{\left(I\right)}{\left(NO_3\right)_2}\)

h. \(\overset{\left(II\right)}{Fe}\overset{\left(I\right)}{Cl_2}\)

i. \(\overset{\left(II\right)}{Cu}\overset{\left(II\right)}{SO_4}\)

j. \(\overset{\left(III\right)}{Al}\overset{\left(III\right)}{PO_4}\)