Question

complete the table to determine the nuclear symbol and number of subatomic particles for a neutral osmium - 188 atom.
nuclear symbol\tsubatomic particles
protons:
neutrons:
electrons:

Explanation:

Step1: Find atomic number of osmium

Osmium (Os) has an atomic number of 76. In a neutral atom, the number of protons is equal to the atomic number. So, the number of protons = 76.

Step2: Determine number of neutrons

The mass - number of osmium - 188 is 188. The formula to find the number of neutrons is $n = A - Z$, where $A$ is the mass - number and $Z$ is the atomic number. So, $n=188 - 76=112$.

Step3: Find number of electrons

In a neutral atom, the number of electrons is equal to the number of protons. So, the number of electrons = 76.

Step4: Write nuclear symbol

The nuclear symbol is written as $^{A}_{Z}X$, where $X$ is the chemical symbol, $A$ is the mass - number and $Z$ is the atomic number. For osmium - 188, the nuclear symbol is $^{188}_{76}Os$.

Answer:

Nuclear Symbol: $^{188}_{76}Os$
Protons: 76
Neutrons: 112
Electrons: 76