Periodic Trends in the Properties of Elements

The ions  ${\mathrm{O}}^{2-},{\mathrm{F}}^{-},{\mathrm{Na}}^{+},{\mathrm{Mg}}^{2+}\mathrm{and}{\mathrm{Al}}^{3+}$ are isoelectronic. Their ionic radii show:

The atomic number of Vanadium $\left(\mathrm{V}\right)$, Chromium $\left(\mathrm{Cr}\right)$, Manganese $\left(\mathrm{Mn}\right)$ and Iron $\left(\mathrm{Fe}\right)$ are, respectively, $23, 24, 25 \mathrm{and} 26$. Which one of these may be expected to have the highest second ionization enthalpy?

Which one of the following arrangements does not truly represent the property indicated against it?

(A)${\mathrm{Br}}_2 < {\mathrm{Cl}}_{2 }< {\mathrm{F}}_2$ : Oxidising power

(B) $\mathrm{Br}< \mathrm{Cl}<\mathrm{F}$          : Electronegativity

(C) $\mathrm{Br}< \mathrm{F} < \mathrm{CI}$        : Electron affinity

(D) ${\mathrm{Br}}_2 < {\mathrm{Cl}}_2 < {\mathrm{F}}_2$  : Bond energy

What happens to the Ionisation enthalpy among $3\mathrm{d}$ series?

Are electron affinity and electron gain enthalpy same?

The element expected to form largest ion to achieve the nearest noble gas configuration is :

Which of the following statements are not correct?

A. The electron gain enthalpy of $\mathrm{F}$ is more negative than that of $\mathrm{Cl}.$

B. Ionization enthalpy decreases in a group of periodic table.

C. The electronegativity of an atom depends upon the atoms bonded to it.

D. ${\mathrm{Al}}_2{\mathrm{O}}_3$ and $\mathrm{NO}$ are examples of amphoteric oxides.

Choose the most appropriate answer from the options given below:

For elements $\mathrm{B}, \mathrm{C}, \mathrm{N} \mathrm{Li}, \mathrm{Be}, \mathrm{O} \mathrm{and} \mathrm{F}$, the correct order of first ionisation enthalpy is

The correct order of metallic character is

The difference between electron gain enthalpies will be maximum between :

The correct order of electronegativity for given elements is

Correct order of first Ionisation energy for $\mathrm{Li},\mathrm{Be},\mathrm{C},\mathrm{B},\mathrm{N},\mathrm{O},\mathrm{F}$.

The correct order of electronegativity of $\mathrm{Br},\mathrm{P},\mathrm{C} \mathrm{and} \mathrm{As}$.

Which of the following have highest electron gain enthalpy difference.

Select The Correct Order Of Ionic Radii For ${\mathrm{Na}}^{+},{\mathrm{Mg}}^{2+},{\mathrm{F}}^{-}\mathrm{and} {\mathrm{O}}^{2-}$?