Ionic or Electrovalent Bond

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?

The number of valence electron lost by fluorine during bond formation in calcium fluoride is one.

Calcium loses _____ of its valence electrons to form an ionic bond in calcium fluoride.

What type of elements form cations in an electrovalent bond.

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)?

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

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

Brittleness is the property of

The solubility of anhydrous ${\mathrm{AlCl}}_3$ and hydrous ${\mathrm{AlCl}}_3$ in diethyl ether are ${\mathrm{S}}_1$ and ${\mathrm{S}}_2$ respectively. Then