How many protons (p)and neutrons (n)are in an atom of Tc?
A) 43 p, 55 n
B) 43 p, 98 n
C) 55 p, 43 n
D) 98 p, 43 n

Name: How many protons (p)and neutrons (n)are in an atom of Tc? A) 43 p, 55 n B) 43 p, 98 n C) 55 p, 43 n D) 98 p, 43 n
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Question

How many protons (p)and neutrons (n)are in an atom of  Tc?
A) 43 p, 55 n 
B) 43 p, 98 n 
C) 55 p, 43 n 
D) 98 p, 43 n

Quizplus · Accepted Answer

The atomic number (number of protons) of Tc is 43. The mass number (sum of protons and neutrons) of Tc is 99. Therefore, the number of neutrons is 99-43=56. The answer is therefore 43 p, 55 n.

How Many Protons (P)and Neutrons (N)are in an Atom of