A. O2+2
B. N2-2
C. B2
D. O2-2
Related Mcqs:
- A specie with maximum number of unpaired electrons ?
A. F
B. H2O
C. HF
D. NH-2 - The specie which donates electrons to central metal atom in coordination sphere is called____________________?
A. anion
B. cation
C. Ligand is positively charged
D. acid - The atomic number of an element having maximum number of unpaired electrons in p-subshell is_______________?
A. 7
B. 10
C. 12
D. 16 - Which one has maximum number of unpaired electrons ?
A. 6X
B. 7Y
C. 9Z
D. 13W - Oxygen (molecular weight = 32) diffuses at a rate of 10cm3/min under the same conditions of temperature and pressure how fast will hydrogen (molecular weight = 2) diffuse ?
A. 20cm3/min
B. 40cm3/min
C. 160cm3/min
D. 2.5cm3/min - Sharing of 1 electron pair by one specie forms_________________?
A. Single covalent bond
B. Hydrogen bond
C. Double covalent bond
D. Coordinate covalent bond - Unpaired electron in a molecule gives ______________ character ?
A. Ferromagnetic
B. Paramagnetic
C. Diamagnetism
D. Both A & B - Energy released or absorbed when electrons are added in atom is_________________?
A. Ionization potential
B. Electronegativity
C. Electron affinity
D. Activation energy - An atom loses or gains electrons to__________________?
A. Gain stability
B. Form a bond
C. Complete its outermost shell
D. all are accurate justifications - The number of d-electrons in Fe2+ (Z = 26) is not equal to that of____________?
A. p-electrons in Ne(Z = 10)
B. s-electrons in Mg(Z = 12)
C. d-electrons in Fe(Z = 26)
D. p-electrons in CI(Z = 17)Submitted by: Muhammad Ali Kunbhar
