Ncert Exercises & Solutions

9.6 Using IUPAC norms write the formulas for the following:

(i) Tetrahydroxidozincate(II)

(ii) Potassium tetrachloridopalladate(II)

(iii) Diamminedichloridoplatinum(II)

(iv) Potassium tetracyanidonickelate(II)

(v) Pentaamminenitrito-O-cobalt(III)

(vi) Hexaamminecobalt(III) sulphate

(vii) Potassium tri(oxalato)chromate(III)

(viii) Hexaammineplatinum(IV)

(ix) Tetrabromidocuprate(II)

(x) Pentaamminenitrito-N-cobalt(III)

(I)
The complex is Tetrahydroxidozincate(II). Tetrahydroxido means four OH^- ions and metal is zinc whose oxidation state is +2. The complex has a negative charge because the name of the metal ends with the suffix – ate. The formula of the compound is
[Zn(OH)₄]^2-.

(II)
The complex is Potassium tetrachloridopalladate(II). Tetrachlorido means four Cl^- ions. The metal is palladium whose oxidation state is +2. The complex has a negative charge because the name of the metal ends with the suffix – ate. The formula of the compound is K₂[PdCl₄].

(III)
The complex is Diamminedichloridoplatinum(II). Diammine means two NH₃ groups and two Cl^- ions. The metal is platinum whose oxidation state is +2. The formula of the compound is [Pt(NH₃)₂Cl₂]

(IV)
The complex is Potassium tetracyanidonickelate(II). Tetracyanido means four CN^- groups. The metal is nickel whose oxidation state is +2. The complex has a negative charge because the name of the metal ends with the suffix – ate. The formula of the compound is K₂[Ni(CN)₄].

(V)
The complex is Pentaamminenitrito-O-cobalt(III). Pentaammine means five NH₃ groups and nitrito-O means nitrito group attached with an oxygen atom. The metal is cobalt whose oxidation state is +3. The formula of the compound is
[Co(NH₃)₅(ONO)]²⁺.

(VI)
The complex is Hexaamminecobalt(III) sulphate. Hexaammine means six NH₃ groups. The metal is cobalt whose oxidation state is +3. The formula of the compound is [Co(NH₃)₆]₂(SO₄)₃.

(VII)
The complex is Potassium tri(oxalato)chromate(III). Trioxalato means three C₂O₄^2-groups. The metal is chromate whose oxidation state is +3. The complex has a negative charge because the name of the metal ends with the suffix – ate. The formula of the compound is K₃[Cr(C₂O₄)₃].

(VIII)
The complex is Hexaammineplatinum(IV). Hexaammine means six NH₃groups. The metal is platinum whose oxidation state is +4. . The formula of the compound is [Pt(NH₃)₆]⁺⁴.

(IX)
The complex is Tetrabromidocuprate(II). Tetrabromido means four Br^- ions. The metal is copper whose oxidation state is +2. The complex has a negative charge because the name of the metal ends with the suffix – ate. The formula of the compound is [CuBr₄]^2-.

(X)
The complex is Pentaamminenitrito-N-cobalt(III). Pentaammine means five NH₃ groups and nitrito-N means nitrito group attached with a nitrogen atom. The metal is cobalt whose oxidation state is +3. The formula of the compound is
[Co(NH₃)₅(NO₂)]²⁺.

NEET Information

courses

Company

Botany Questions

Chemistry Questions

Physics Questions

Zoology Questions