which of the following statements is true ?
a) the mass number is 13
b) the atomic mass is 15
c) the atomic number is 12
d) the mass number is 25
2007-05-01 15:38:32 · 7 answers · asked by classy.chic 3 in Science & Mathematics ➔ Chemistry
D)because the mass number is equal to the atomic number plus the nuber of neutrons(A=13p+12n=25 protons and neutrons(which is the mass number) )
2007-05-01 15:47:55 · answer #1 · answered by Dr. Eddie 6 · 0⤊ 0⤋
Only d (mass= # protons+#neutrons). The atomic number is 13.
2007-05-01 22:42:42 · answer #2 · answered by cattbarf 7 · 0⤊ 0⤋
d)
atomic number = number of protons
mass number (also called atomic mass) = protons + neutrons
2007-05-01 22:41:32 · answer #3 · answered by Anonymous · 0⤊ 0⤋
the mass no. = no of protons + no of neutrons
the answer is (d)
2007-05-01 22:42:29 · answer #4 · answered by angelgirl 2 · 0⤊ 0⤋
D is the correct answer
2007-05-01 22:43:19 · answer #5 · answered by ChemTeam 7 · 0⤊ 0⤋
D
2007-05-01 23:21:46 · answer #6 · answered by xox_bass_player_xox 6 · 0⤊ 0⤋
D
2007-05-01 22:54:37 · answer #7 · answered by ms_sam305 1 · 0⤊ 0⤋