GK
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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40
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88
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38
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90
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Detailed explanation-1: -As we are provided with the information that the mass number of Strontium is 88, and we know that the atomic number of Strontium is 38.-It is found that the number of protons is equal to the atomic number. This clearly means that any atom which is an isotope of Strontium will basically have 38 protons in the nucleus.
Detailed explanation-2: -So it is 38. Okay, the mask number is 88. So the number of protons is 38.
Detailed explanation-3: -The mass number of strontium is 88. This is because the most common, naturally-occurring isotope of strontium is strontium-88. While there are always 38 protons in a strontium atom, the neutrons of the nucleus can vary. In the case of strontium-88, there are 50 neutrons.
Detailed explanation-4: -EXPLANATION: The given atom is 38Sr88(Strontium), its atomic number is 38 and mass number is 88. Number of protons = Atomic number = 38. Number of neutrons = A – Z = 88-38 = 50.