If a neutral element has 8 neutrons and 7 electrons, which expression correctly identifies the element?
15/7 N
To identify the element based on the given information, we need to determine the atomic number, which is equal to the number of protons in the nucleus of the atom.
In a neutral atom, the number of protons should be equal to the number of electrons.
Since the neutral atom has 7 electrons, the atomic number would also be 7.
The expression that correctly identifies the element is: Element with atomic number 7.
Based on the periodic table, the element with atomic number 7 is nitrogen (N).
To identify the element based on the given information, we need to determine its atomic number (number of protons) by subtracting the number of electrons from the total number of neutrons.
Total number of neutrons = 8
Number of electrons = 7
Since a neutral element has equal numbers of protons and electrons, the atomic number of the element would be:
Atomic number = Total number of neutrons - Number of electrons
= 8 - 7
= 1
The atomic number 1 corresponds to the element Hydrogen (H). Therefore, the expression that correctly identifies the element is Hydrogen (H).