Which is the chemical formula for a dinitrogen trioxide molecule? A. SN2O

B. 2N3O2

C. NO3

D. N2O3

The Answer would be D. N2O3

Explanation:

the Chemical bond is a Covalent bond to which the prefixes are Di and tri

¹³₆C

Explanation:

The given nuclear reaction is:

          ¹⁰₅B + ₂⁴He → ᵃₙX + ₁¹H

In balancing nuclear reaction equation, the mass number which are the superscript and atomic number, the subscript on both sides of the equation must be the same.

For the mass number:

                  10 + 4 = a + 1

                  14 = a + 1

                    a = 13

For the atomic number:

             5 + 2 = n + 1

                7 = n + 1

                  n = 6

Note: n is the same as z from the equation

        therefore our atom is ¹³₆X which is an isotope of carbon, ¹³₆C