Answer
Missing atom: $^{14}_{7}N$
Complete reaction:
$^1_0n + ^{14}_{7}N -- \gt ^{14}_{6}C + ^1_1H $
Work Step by Step
1. Find the mass number of the missing element.
The total mass number of the left side must be equal to that of the right side.
$1 + ? = 14 + 1$
$? = 14$
2. Find the atomic number of the missing element.
The total atomic number of the left side must be equal to that of the right side.
$0 + ? = 6 + 1$
$? = 7$
3. Identify the symbol of the element with atomic number equal to 7:
It is "N".
4. Now, write the complete symbol, and substitute it on the reaction.
$^{14}_{7}N$
$^1_0n + ^{14}_{7}N -- \gt ^{14}_{6}C + ^1_1H $
