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#1: The atomic number of an atom is equivalent to which of the following? A. the number of protons plus the number of neutrons in the nucleus B. the number of electrons outside the nucleus C. the number of protons in the nucleus D. the number of neutrons in the nucleus ***my answer: C is that right??
u are correct .
#2: The mass number of an atom is equal to which of the following? A. the number of protons plus the number of neutrons in a nucleus B. the number of protons in a nucleus C. the number of protons plus the number of electrons in an atom D. the number of electrons circling the nucleus of an atom **My answer: A is that correct?
2 years ago #3: A specific atom of molybdenum has an atomic number of 42 and a mass number of 96. How many protons are in this atom of molybdenum? A. 21 B. 42 C. 54 D. 96 **MY answer: B. 42
#4: An atom of iridium has an atomic number of 77. There are 116 neutrons in the nucleus of a specific atom of iridium. What is the mass number of this atom of iridium? A. 77 B. 115 C. 193 D. 269 **MY answer:C
2 years ago #5: An electrically neutral atom of manganese has an atomic number of 25. How many electrons does this atom have? A. 10 B. 25 C. 55 D. 80 ***My answer: B. 25
#6: In any electrically neutral atom, what is true of the number of electrons? A. It is half the number of protons in the nucleus B. It is equal to the number of protons plus the number of neutrons. C. It is equal to the number of protons in the nucleus. D. It is equal to the number of neutrons in the nucleus. **MY answer: C.
Thats it:) Thanks a ton again
all of your answers are correct. !!!!!