Question

how many neutrons are in the nucleus of an atom with an atomic number of 25 (use periodic table for mass)

Answer 1

✎ 13 neutrons

They differ only because a 24Mg atom has 12 neutrons in its nucleus, a 25Mg atom has 13 neutrons, and a 26Mg has 14 neutrons.

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Answer 2

There are 30 neutrons in the nucleus of an atom with an atomic number of 25.

• An atomic number of an atom is given I.e 25.
• In chemistry, the atomic number is denoted by Z and is a term that typically characterizes the total number of protons found in the nucleus of an element.
• So, the atomic number of any chemical element is the same as its total number of protons.
• Number of protons = Atomic number = 25
• By using the periodic table, it can be found that manganese is the element that has an atomic number = 25.
• Here, the mass number of manganese can be determined which is equal to 55.
• Now, the mass number of any chemical element is equal to the sum of several neutrons and the number of protons.
• To determine the number of neutrons, Simply subtract the number of protons from the given mass number of manganese.
• 55 = number of neutrons + 25
• Number of neutrons = 55 - 25 = 30.

Hence, the number of neutrons present in the element manganese with an atomic number of 25 is 30.