Oxidation States
Trending Questions
Q.
Which of the following is least soluble in H2O?
Ba
Sr
Cr
Mg
Q.
The electronic configuration of an element with atomic number (Z = 11) is 1s2, 2s2, 2p6, 3s1. The symbol of the element is:
Rb
Na
Cs
Li
Q. why valence shell has maximum 8 electrons
Q. air contains 70% of nitrogen and 30% of oxygen by moles find average molar mass
Q. both nitrogen and chlorine have an electronegativity of 3 on pauling scale. so if they were to react, would they form a purely covalent bond?
Q. Oxidation states of Carbon in CH3COOH
Q.
Oxidation number of oxygen in potassium super oxide KO2 is
- 2
- 1
- 1/2
- 1/4
Q. Elements of which of the following groups will form anions most readily?
- Oxygen family
- Nitrogen family
- Halogens
- Alakali metals
Q. Write the atomic number of the element present in the third period and seventeenth group of the periodic table
Q.
Ionic product of water is
constant below freezing point of water
constant at all temperatures
constant above boiling point of water
constant at a particular temperature
Q. Considering the elements B, Al, Mg and K, the correct order of their metallic character is:
- Al>Mg>B>K
- K>Mg>Al>B
- Mg>Al>K>B
- B>Al>Mg>K
Q. There are three elements E, F, G with atomic numbers 19, 8 and 17 respectively.
Classify the elements as metals and non-metals.
Classify the elements as metals and non-metals.
Q. Which of the following exhibit only +3 oxidation state ?
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<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> AIPMT 2012 (MAINS)
- U
- Th
- Pa
- Ac
Q. If
A = 1s2, 2s2, 2p1
B = 1s2, 2s2, 2p6, 3s2, 3p1
C = 1s2, 2s2, 2p6, 3s2, 3p3
D = 1s2, 2s2, 2p6, 3s2, 3p5
E = 1s2, 2s2, 2p6, 3s2, 3p6 4s2
F = 1s2, 2s2, 2p6, 3s2 4s2, 3d1
A = 1s2, 2s2, 2p1
B = 1s2, 2s2, 2p6, 3s2, 3p1
C = 1s2, 2s2, 2p6, 3s2, 3p3
D = 1s2, 2s2, 2p6, 3s2, 3p5
E = 1s2, 2s2, 2p6, 3s2, 3p6 4s2
F = 1s2, 2s2, 2p6, 3s2 4s2, 3d1
- Which is the most metallic?
- Which has the highest negative value for electron gain enthalpy?
- Which one belongs to the d-block?
- Which is a halogen?
- Which two elements are in the same group?
- Which element belongs to the 13th group?
Q. calculate the equivalent weight of ki in cuso4+ki=cu2i2+k2so4+i2
Q.
why r superoxides called so??what is d reason for formation of superoxides??
Q. How many electrons are present in valecy shell of of z=26? & Explain what is meant by valence electron and valence shell??
Q. Oxidation number of S2O3 (2-)
Q. Solve this:
Q. What are the oxidation numbers of chlorine in Ca(OCl)Cl?
Q. What are the oxidation numbers of chlorine in Ca(OCl)Cl?
Q. Halogens don’t exhibit -1 oxidation state - True or False?
- True
- False
Q. what is the oxidation state ok K in KO2?
Q. Electronic configuration of 1) Mn2+ (25) 2) Zn2+ (30).
Q. what is the oxidation state of cr in cr2o?
Q. What is the oxidation number of Fe in Fe3O4
Q.
OXIDATION STATE OF N IN N3H IS ?
OXIDATION STATE OF P IN H4P2O5, H4P2O6, H4P2O7 IS ?
Q. what is the oxidation state of O2 in
Na2O, KO2, Na2O2, O2F2, OF2
Na2O, KO2, Na2O2, O2F2, OF2