Diagonal Relationship (Group 1)

Q. Choose the properties which shows the diagonal relationship of Li and Mg.

1. Both form nitrides
2. Both combine with excess oxygen to give superoxides.
3. Both $LiCl$ and $MgC{l}_2$ are soluble in ethanol
4. Both carbonates decompose easily on heating

Q. Choose the incorrect properties which shows the diagonal relationship of Li and Mg.

1. Both form nitrides
2. Both combine with excess oxygen to give superoxides.
3. Both $LiCl$ and $MgC{l}_2$ are soluble in ethanol
4. Both carbonates decompose easily on heating

Q.

Lithium resembles magnesium in some of its properties. Mention two such properties and give reasons for this resemblance.

Q. Which of the following is incorrect?

1. $L{i}_{2}C{O}_3\left(s\right)\stackrel{\Delta }{\to }L{i}_{2}O\left(s\right)+C{O}_2\left(g\right)$
2. $2LiN{O}_3\left(s\right)\stackrel{\Delta }{\to }2LiN{O}_2\left(s\right)+O_2\left(g\right)$
3. $2Li\left(OH\right)\left(s\right)\stackrel{\Delta }{\to }L{i}_{2}O\left(s\right)+H_{2}O\left(l\right)$
4. $6Li\left(s\right)+N_2\left(g\right)\stackrel{\Delta }{\to }2L{i}_{3}N\left(s\right)$

Q.

Explain the term simple radical with a suitable example

Q. Choose the properties which shows the diagonal relationship of Li and Mg.

1. Both carbonates decompose easily on heating
2. Both $LiCl$ and $MgC{l}_2$ are soluble in ethanol
3. Both combine with excess oxygen to give superoxides.
4. Both form nitrides

Q. "$N{a}_{2}C{O}_3$ is more thermally stable than $L{i}_{2}C{O}_3$."
Answer whether the above statement is true or false.
If true enter 1, else enter 0.

Q.

Which of the following metal oxides is white in colour but becomes yellow on heating?

1. $A{g}_{2}O$
2. $ZnO$
3. $FeO$
4. $MgO$

Q. $BeC{l}_2$ exists as monomer in which state?

1. in vapour state
2. in liquid state
3. in solid state
4. Does not exist