Describe what happens to the mass number and the atomic number of a nuclide during alpha decay.

2 answers:

5 0

Protons are positively charged. When a nucleus emits an alpha particle, these changes happen: the mass number decreases by 4. the atomic number decreases by 2.

Digiron [165]3 years ago

3 0

Answer:

The answer to your question is: The mass number will be 4 units lower.

Explanation:

Alpha particles are Helium atoms, which have a mass number of 4 and atomic number of 2.

When an alpha particle is released, the original atom loses 2 protons and and 2 neutrons an we can see in the example.

²²⁶ ₈₈ Ra ⇒ ²²² ₈₆ Rn + ⁴₂ He

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Which is an element? A: H20 B: NaCl C: Mg D: CO

Talja [164]

The answer is option D "CO." Co also known as Cobalt is the 27th element on the periotic table. It was discovered in 1735, it's boiling point is 3200 k.

Atomic mass: 58.9332
Protons: 27
Neutrons: 32
Electrons: 27

Hope this helps!