Question

here are three isotopes of an element: ₆¹²c ₆¹³c ₆¹⁴c
the element is
the number 6 refers to the
the numbers 12, 13, and 14 refer to the
how many protons and neutrons are in the first isotope?
how many protons and neutrons are in the second isotope?
how many protons and neutrons are in the third isotope?

complete the following table about isotopes.

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

Explanation:

Step1: Identify element

The element is carbon as symbol is C.

Step2: Define number 6

6 is atomic number, number of protons.

Step3: Define 12, 13, 14

They are mass numbers (protons + neutrons).

Step4: Calculate for isotopes

First: 6 protons, 6 neutrons; Second: 6 protons, 7 neutrons; Third: 6 protons, 8 neutrons.

Step5: Fill uranium - 235

Atomic # 92, mass # 235, 92 protons, 143 neutrons, 92 electrons.

Step6: Fill uranium - 238

Atomic # 92, mass # 238, 92 protons, 146 neutrons, 92 electrons.

Step7: Fill boron - 10

Atomic # 5, mass # 10, 5 protons, 5 neutrons, 5 electrons.

Answer:

Carbon; Atomic number; Mass numbers; 6 protons, 6 neutrons; 6 protons, 7 neutrons; 6 protons, 8 neutrons; 92, 235, 92, 143, 92; 92, 238, 92, 146, 92; 5, 10, 5, 5, 5