The radius of H-atom in its ground state is 0.58Å .The radius of, 3Li2+ ithe similar state is
0.1777 Å
0.706 Å
1.06 Å
0.058 Å
The correct order of ionization energies is
Cu > Ag > Au
Cu > Au > Ag
Au > Cu > Ag
Ag > Au > Cu
The set representing the correct order of ionic radius is
Li+ > Be2+ > Na+ > Mg2+
Na+ > Li+ > Mg2+ > Be2+
Li+ > Na+ > Mg2+ > Be2+
Mg2+ > Be2+ > Li+ > Na+
Which of the following is the correct decreasing order of oxidation state of nitrogen?
HNO3 > NO > NH4Cl > N2
HNO3 > NO > N2 > NH4Cl
HNO3 > NH4Cl > NO > N2
NO > HNO3 > NH4Cl > N2
Ionisation energy in group 1A varies in the decreasing order as
Li > Na > K > Cs
Na > Li > K > Cs
Li > Cs > K Na
K > Cs > Na > Li
An example of a non-stoichiometric compound is
PbO
NiO2
Al2O3
Fe3O4
D.
Fe3O4
Fe3O4 is a non-stoichiometric compound because in it, the ratio of the cations to the anions becomes different from that indicated by the chemical formula.
The equation used to represents the electron gain enthalpy is
X(g) + e- → X-(g)
X(s) + e- → X-(g)
X(g) → X+(g) + e-
X(s) → X+(g) + e-
An element in +2 oxidation state has 24 electrons. The atomic number of the element and the number of unpaired electrons in it respectively are
24 and 4
26 and 4
24 and 2
26 and 5