DAT COMMON IONS TEST 2026 ACTUAL QUESTIONS AND CORRECT ANSWERS (LATEST
UPDATE) GRADED A+ 100% GUARANTEE VERIFIED BY EXPERTS
SECTION A: MONATOMIC CATIONS AND THEIR CHARGES
1. What is the correct charge of the sodium ion in ionic compounds?
A. +1
B. +2
C. -1
D. -2
Answer: A
Rationale: Sodium belongs to Group 1 and loses one electron to achieve a noble gas
configuration, forming Na+.
2. Which of the following is the correct formula for the potassium ion?
A. K+
B. K2+
C. K-
D. K2-
Answer: A
Rationale: Potassium is an alkali metal that loses one electron, giving a stable +1 charge.
3. The calcium ion carries what charge in ionic compounds?
A. +1
B. +2
C. +3
D. -2
Answer: B
Rationale: Calcium is an alkaline earth metal that loses two electrons to form Ca2+.
,4. What is the charge of the magnesium ion?
A. +1
B. +3
C. +2
D. -1
Answer: C
Rationale: Magnesium loses two valence electrons to achieve a stable octet, forming
Mg2+.
5. Which ion is formed when aluminum loses electrons?
A. Al+
B. Al2+
C. Al3+
D. Al4+
Answer: C
Rationale: Aluminum has three valence electrons and loses all three to form Al3+.
6. The ammonium ion is a polyatomic cation with which formula?
A. NH3+
B. NH4+
C. NH2+
D. NH4-
Answer: B
Rationale: Ammonium consists of one nitrogen and four hydrogen atoms with a net positive
charge.
7. Which of the following is the correct charge for the iron(II) ion?
A. Fe+
B. Fe2+
C. Fe3+
D. Fe4+
Answer: B
Rationale: The Roman numeral II indicates a +2 oxidation state for iron.
8. What is the charge of the iron(III) ion?
A. Fe+
B. Fe2+
,C. Fe3+
D. Fe4+
Answer: C
Rationale: The Roman numeral III indicates a +3 oxidation state for iron.
9. The copper(I) ion has which charge?
A. Cu+
B. Cu2+
C. Cu3+
D. Cu-
Answer: A
Rationale: Copper(I) indicates the +1 oxidation state, forming Cu+.
10. What is the charge of the copper(II) ion?
A. Cu+
B. Cu2+
C. Cu3+
D. Cu-
Answer: B
Rationale: Copper(II) indicates the +2 oxidation state, forming Cu2+.
11. The zinc ion in ionic compounds carries what charge?
A. Zn+
B. Zn2+
C. Zn3+
D. Zn-
Answer: B
Rationale: Zinc typically loses two electrons to form the stable Zn2+ ion.
12. What is the charge of the silver ion?
A. Ag+
B. Ag2+
C. Ag3+
D. Ag-
Answer: A
Rationale: Silver commonly forms a +1 cation by losing one electron.
, 13. The lead(II) ion has which formula?
A. Pb+
B. Pb2+
C. Pb3+
D. Pb4+
Answer: B
Rationale: Lead(II) indicates the +2 oxidation state, forming Pb2+.
14. What is the charge of the lead(IV) ion?
A. Pb+
B. Pb2+
C. Pb3+
D. Pb4+
Answer: D
Rationale: Lead(IV) indicates the +4 oxidation state, forming Pb4+.
15. The tin(II) ion carries what charge?
A. Sn+
B. Sn2+
C. Sn3+
D. Sn4+
Answer: B
Rationale: Tin(II) indicates the +2 oxidation state, forming Sn2+.
16. What is the charge of the chromium(III) ion?
A. Cr+
B. Cr2+
C. Cr3+
D. Cr6+
Answer: C
Rationale: Chromium(III) indicates the +3 oxidation state, forming Cr3+.
17. The manganese(II) ion has which formula?
A. Mn+
B. Mn2+
C. Mn3+
D. Mn4+
UPDATE) GRADED A+ 100% GUARANTEE VERIFIED BY EXPERTS
SECTION A: MONATOMIC CATIONS AND THEIR CHARGES
1. What is the correct charge of the sodium ion in ionic compounds?
A. +1
B. +2
C. -1
D. -2
Answer: A
Rationale: Sodium belongs to Group 1 and loses one electron to achieve a noble gas
configuration, forming Na+.
2. Which of the following is the correct formula for the potassium ion?
A. K+
B. K2+
C. K-
D. K2-
Answer: A
Rationale: Potassium is an alkali metal that loses one electron, giving a stable +1 charge.
3. The calcium ion carries what charge in ionic compounds?
A. +1
B. +2
C. +3
D. -2
Answer: B
Rationale: Calcium is an alkaline earth metal that loses two electrons to form Ca2+.
,4. What is the charge of the magnesium ion?
A. +1
B. +3
C. +2
D. -1
Answer: C
Rationale: Magnesium loses two valence electrons to achieve a stable octet, forming
Mg2+.
5. Which ion is formed when aluminum loses electrons?
A. Al+
B. Al2+
C. Al3+
D. Al4+
Answer: C
Rationale: Aluminum has three valence electrons and loses all three to form Al3+.
6. The ammonium ion is a polyatomic cation with which formula?
A. NH3+
B. NH4+
C. NH2+
D. NH4-
Answer: B
Rationale: Ammonium consists of one nitrogen and four hydrogen atoms with a net positive
charge.
7. Which of the following is the correct charge for the iron(II) ion?
A. Fe+
B. Fe2+
C. Fe3+
D. Fe4+
Answer: B
Rationale: The Roman numeral II indicates a +2 oxidation state for iron.
8. What is the charge of the iron(III) ion?
A. Fe+
B. Fe2+
,C. Fe3+
D. Fe4+
Answer: C
Rationale: The Roman numeral III indicates a +3 oxidation state for iron.
9. The copper(I) ion has which charge?
A. Cu+
B. Cu2+
C. Cu3+
D. Cu-
Answer: A
Rationale: Copper(I) indicates the +1 oxidation state, forming Cu+.
10. What is the charge of the copper(II) ion?
A. Cu+
B. Cu2+
C. Cu3+
D. Cu-
Answer: B
Rationale: Copper(II) indicates the +2 oxidation state, forming Cu2+.
11. The zinc ion in ionic compounds carries what charge?
A. Zn+
B. Zn2+
C. Zn3+
D. Zn-
Answer: B
Rationale: Zinc typically loses two electrons to form the stable Zn2+ ion.
12. What is the charge of the silver ion?
A. Ag+
B. Ag2+
C. Ag3+
D. Ag-
Answer: A
Rationale: Silver commonly forms a +1 cation by losing one electron.
, 13. The lead(II) ion has which formula?
A. Pb+
B. Pb2+
C. Pb3+
D. Pb4+
Answer: B
Rationale: Lead(II) indicates the +2 oxidation state, forming Pb2+.
14. What is the charge of the lead(IV) ion?
A. Pb+
B. Pb2+
C. Pb3+
D. Pb4+
Answer: D
Rationale: Lead(IV) indicates the +4 oxidation state, forming Pb4+.
15. The tin(II) ion carries what charge?
A. Sn+
B. Sn2+
C. Sn3+
D. Sn4+
Answer: B
Rationale: Tin(II) indicates the +2 oxidation state, forming Sn2+.
16. What is the charge of the chromium(III) ion?
A. Cr+
B. Cr2+
C. Cr3+
D. Cr6+
Answer: C
Rationale: Chromium(III) indicates the +3 oxidation state, forming Cr3+.
17. The manganese(II) ion has which formula?
A. Mn+
B. Mn2+
C. Mn3+
D. Mn4+
