A multiple covalent bond forms when A. one pair of electrons is shared between two atoms.
B. a lone pair of electrons is present in the molecule.
C. 3 electrons are shared between 2 atoms.
D. more than one pair of electrons is shared between two atoms.

answer; i do believe the correct answer is (river); /// good luck

i think it is true since you can test the answer and can use observations to complete it.

so here we go

atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137             subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54               subtract 54 from both sides.

40 = z

answer