Pls help i will report you if send a link

answer; /// i do believe that the correct answer is (a) boiling

the answer is 303.15 or 303

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

answersilicon (si); oxygen (o);