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Sagot :
Answer:
Explanation:
Mass number = No of neutrons + no of protons
Let no of protons be p , No of neutrons = p + 12
Putting the given values
88 = p + 12 + p
76 = 2p
p = 38
n = 50
a ) Atom is Strontium ( Sr )
Electronic configuration
1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶5s²
b ) Sr²⁺
1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶
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