Scelta multipla
How many neutrons does a lithium atom with a mass number of 7 have?
729
views
2. Atoms & Elements
Isotopes
Scelta multipla
How many neutrons does a sodium (Na) atom typically have?
A
11 neutrons
B
13 neutrons
C
12 neutrons
D
14 neutrons
Guida verificata passo dopo passo1
Identify the atomic number of sodium (Na) from the periodic table. Sodium has an atomic number of 11, which means it has 11 protons.
Determine the mass number of a typical sodium atom. The most common isotope of sodium is sodium-23, which has a mass number of 23.
Use the formula to find the number of neutrons: \( \text{Number of neutrons} = \text{Mass number} - \text{Atomic number} \).
Substitute the values into the formula: \( \text{Number of neutrons} = 23 - 11 \).
Calculate the result from the substitution to find the number of neutrons in a typical sodium atom.
Video correlati
Pratica correlata
