Question

complete the following table about isotopes.

isotope name	atomic #	mass #	# of protons	# of neutrons	# of electrons
uranium - 238
boron - 10
boron - 11

Explanation:

Step1: Recall atomic number facts

For uranium, atomic number = 92; for boron, atomic number = 5.

Step2: Calculate neutrons

Neutrons = mass number - atomic number.

Step3: Recall electron - proton equality

In neutral atoms, number of electrons = number of protons.

Answer:

Isotope name	atomic #	mass #	# of protons	# of neutrons	# of electrons
uranium - 238	92	238	92	146	92
boron - 10	5	10	5	5	5
boron - 11	5	11	5	6	5