How would you explain the lower atomic radius of $Ga$ as compared to $Al$?
How would you explain the lower atomic radius of $Ga$ as compared to $Al$?
| Atomic radius (in $pm$) | |
| Aluminium | $143$ |
| Gallium | $135$ |
Although $Ga$ has one shell more than $A l$ its size is lesser than $A l$ . This is because of the poor shielding effect of the $3 d -$ electrons. The shielding effect of $d -$ electrons is very poor and the effective nuclear charge experienced by the valence electrons in gallium is much more than it is in the case of $Al$
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Name the metals with which $Al$ can form alloy?
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Two students were given the task to prepare an adduct $NH_3 \to BH_3$ at low temperature :-
Student $I$ :- She mixed $B_2H_6$ and $NH_3$
Student $II$ :- He mixed $B_2H_6$ with $THF$ followed by addition of $NH_3$
Which student is expected to get the $CORRECT$ final product ?
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Student $I$ :- She mixed $B_2H_6$ and $NH_3$
Student $II$ :- He mixed $B_2H_6$ with $THF$ followed by addition of $NH_3$
Which student is expected to get the $CORRECT$ final product ?
Consider the following reaction
$(a)\, B_2H_6 + 6H_2O \to$
$(b)\, B_2H_6 + 6CH_3OH \to$
$(c)\, B_2H_6 + 3Cl_2 \to$
$(d)\, BR_3 + 3CH_3COOH \to$
Identify incorrect statement about product $(s)$
Consider the following reaction
$(a)\, B_2H_6 + 6H_2O \to$
$(b)\, B_2H_6 + 6CH_3OH \to$
$(c)\, B_2H_6 + 3Cl_2 \to$
$(d)\, BR_3 + 3CH_3COOH \to$
Identify incorrect statement about product $(s)$