valency of nitrogen in nitrogen dioxide(NO2) is 2
The formula for the nitrate ion is NO3- so the valency is -1.
Determine the molar mass of NO2 using the subscripts in the formula and the atomic weights in grams from the periodic table. 1 mole NO2 = (1 x 14.0067g N) + (2 x 15.9994g O) = 46.0055g NO2 Calculate the moles NO2 by dividing the given mass by the molar mass. 25.5g NO2 x (1mol NO2/46.0055g NO2) = 0.554mol NO2
N+O = No2
N + o2 => no2 s + o2 => so2
N= 7 O = 16 Molar mass = 39
The formula for the nitrate ion is NO3- so the valency is -1.
n+o2=no2
nitrogen
The molecular geometry of NO2 is linear. N(triple bond)N(single bond)O
Zinc (Zn) does not have variable valency
N is +3, O is -2. The anion has an oxidation number of -1 (equal to its charge)
3
Determine the molar mass of NO2 using the subscripts in the formula and the atomic weights in grams from the periodic table. 1 mole NO2 = (1 x 14.0067g N) + (2 x 15.9994g O) = 46.0055g NO2 Calculate the moles NO2 by dividing the given mass by the molar mass. 25.5g NO2 x (1mol NO2/46.0055g NO2) = 0.554mol NO2
N+O = No2
Symbol of nitride is N and its valency is 3
-2 for each O, +4 for N
Barium is in group 2, so has a valency of 2. Nitrogen is is in group 15, so has a valency of 3. You have to get the total valencies to equal so: Ba3N2. Total valency of Ba=3x2=6. Total valency of N=2x3=6.