Ionic or Electrovalent Bond

When ${\mathrm{X}}_{\mathrm{A}}>>{\mathrm{X}}_{\mathrm{B}}, \mathrm{A}-\mathrm{B}$ bond is :

The crystalline structure of $\mathrm{NaCl}$ is 

The metal ion with total number of electrons same as ${\mathrm{S}}^{2-}$ is

Which of the following is a monoatomic ion?

Draw the crystal structure of sodium chloride.

The structure of sodium chloride is formed by repeating the _____ cubic unit cell.

 Which of the following statement is incorrect?

Arrange $\mathrm{N}, \mathrm{S}, \mathrm{O} \& \mathrm{F}$ in order of decreasing electron gain enthalpy

 Which among the following compound shows the highest lattice energy? 

Assertion $\left(\mathrm{A}\right):$ The first ionization energy of $\mathrm{Be}$ is greater than that of $\mathrm{B}.$

Reason $\left(\mathrm{R}\right):$ $2\mathrm{p}$ orbital has lower energy than $2\mathrm{s}$ orbital.

Name the bond formed by calcium and oxide ions.

An element with the atomic number $19$ will most likely combine chemically with the element whose atomic number is

$\mathrm{K}\mathrm{ }\left[\mathrm{B}\mathrm{r}\mathrm{I}\mathrm{C}\mathrm{l}\right]\mathrm{ }\stackrel{\mathrm{\Delta }}{\to }\mathrm{ }\left(\mathrm{X}\right)\mathrm{ }+\mathrm{ }\left(\mathrm{Y}\right)$

Which of the following compounds contain(s) no covalent bond(s)?

$\mathrm{KCl},\mathrm{ }{\mathrm{PH}}_3,\mathrm{ }{\mathrm{O}}_2,\mathrm{ }{\mathrm{B}}_2{\mathrm{H}}_6,\mathrm{ }{\mathrm{H}}_2{\mathrm{SO}}_4$

Name the factors that favours the formation of electrovalent bond between atoms.

What is the cation and anion present in sodium bicarbonate salt?

Which of the following compound formed by ionic bond?

Electronic configuration of element $\mathrm{X}$ is $2,8,8,1$ and electronic configuration of element $\mathrm{Y}$ is $2,8,7$. Then the type of bond found between these two elements is

Arrange the following systems with respect to the correct order of hydrogen bond strength:

$\left(\mathrm{i}\right) \mathrm{OH}...\mathrm{O}$

$\left(\mathrm{ii}\right) \mathrm{NH}...\mathrm{O}$

$\left(\mathrm{iii}\right) \mathrm{FH}...\mathrm{O}$