Which systematic diagram represents the correct sequence of the physical properties?
S.No.  Property
1.  Electronegativity
2.  Metallic property
3.  Atomic radius

Which of the following represent the correct order of acidic strength?

The $\%$ ionic character of the binary compound $\mathrm{A}-\mathrm{B}$ is given by $\%$ ionic character $=16\left({\mathrm{X}}_{\mathrm{A}}-{\mathrm{X}}_{\mathrm{B}}\right)+3.5{\left({\mathrm{X}}_{\mathrm{A}}-{\mathrm{X}}_{\mathrm{B}}\right)}^2$

Which of the following compound is more than $50\%$ ionic?

The $\%$ ionic character of a binary compound $\mathrm{A}-\mathrm{B}$ is given by $\%$ ionic character$=16\left({\mathrm{X}}_{\mathrm{A}}-{\mathrm{X}}_{\mathrm{B}}\right)+3.5{\left({\mathrm{X}}_{\mathrm{A}}-{\mathrm{X}}_{\mathrm{B}}\right)}^2$