Question

How many neutrons and protons are there in the nuclei of 26 Fe 56 , 38 Sr 88.​

Answer 1

Explanation:

26 FE 56 =

Here mass number = 56

Atomic number = Number of protons = 26

Number of neutrons = (mass number ) – (Atomic number)

= 56 – 26 = 30

38 sr 88 =

Here mass number = 88

Atomic number = Number of protons = 38

Number of neutrons = (mass number) – (Atomic number)

= 88 – 38 = 50

Answer 2

Answer:

i) 26 protons, 30 neutrons

ii) 38 protons, 50 neutrons

Explanation:

In 26(Fe)56, 26 is atomic number which is equal to number of protons or electrons. 56 is the atomic mass which is sum of number of protons/electrons and number of neutrons.

atomic mass = no. of protons/electrons/atomic number + no. of neutrons

no. of neutrons = atomic mass - atomic number

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