Answer:
n = A - Z
n = 20 - 10
n = 10
10 Neutrons
Explanation:
Atomic Mass = # of Protons + # of Neutrons
Atomic Number = # of Protons in nucleus and what element
20 = 10 protons + x # of neutrons
10 = x # of protons
Answer
153
51/120 = x/360
51(360) = 120x
18360 = 120x
18360/120x = 120x/120x
153 = x
Potassium (K):
⇒ 39.10 g/mol
Osmium (Os):
⇒ 190.23 g/mol
Manganese (Mn):
⇒ 54.94 g/mol
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