Answer
Missing atom: $^{17}_8O$
Complete nuclear equation:
$^4_2He + ^{14}_7N --\gt ^{17}_8O + ^1_1H$
Work Step by Step
1. Calculate the mass number of the missing atom.
- The sum of the mass numbers on the right side must be equal to that on the left side.
$4 + 14 = ? + 1$
$18 = ? + 1$
$18 - 1 = ?$
$? = 17$
2. Calculate the atomic number of the missing atom.
- The sum of the atomic numbers on the right side must be equal to that on the left side.
$2 + 7 = ? + 1$
$9 = ? +1$
$9 -1 = ?$
$8 = ?$
3. Identify the symbol of the element with atomic number equal to 8 (Use a periodic table):
- It is "O".
4. Write the symbol with the atomic and mass numbers, and write the complete nuclear equation:
$^{17}_8O$
$^4_2He + ^{14}_7N --\gt ^{17}_8O + ^1_1H$
