Answer
Atomic symbol for that nitrogen with 8 neutrons:
$^{15}_7N$
Work Step by Step
1. Identify the symbol for nitrogen.
According to the table 4.2 (Page 97), the symbol for nitrogen is: "N".
2. Find the atomic number.
Using the periodic table (Page 100), we can see that the atomic number for "N" is: 7.
3. Calculate the mass number:
The mass number is equal to the sum of the number of protons and neutrons.
$N ^o$ $proton =$ atomic number $ = 7$
$N ^o$ $neutrons = 8$
$Mass$ $number = 7 + 8 = 15$
4. Write the complete symbol.
- Put the mass number in the upper left corner of the symbol, and the atomic number in the lower left corner.
$^{15}_7N$
