Chemistry, 20.09.2019 13:20 Unstinct

Alarge atom decays and emits a particle. after the reaction is complete, the atom’s mass has changed substantially. what kind of particle has most likely been emitted?

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Answer from: Katiecool290

The answer your looking for is, alpha particle.

Hope this Helps!

Answer from: hePandaKing3750

The particles that are emitted are alpha -particles.

Explanation: There are 3 types of particles that can be emitted in the radioactive decay process.

1) Alpha-particles: These particles are released in the reactions which undergo alpha-decay processes. The mass number of these particles is 4 and hence, the atom undergoing this decay will experience a change in its atomic mass.

$_Z^A\textrm{X}\rightarrow _{Z-2}^{A-4}\textrm{Y}+_2^4\alpha$

2) Beta-particles: These particles are released in the reactions which undergo beta-minus process. The mass number of these particles is 0 and hence, the atom undergoing this decay will not experience a change in its atomic mass.

$_Z^A\textrm{X}\rightarrow _{Z+1}^A\textrm{Y}+_{-1}^0\beta$

3) Positron particles: These particles are released in the reactions which undergo beta-plus processes. The mass number of these particles is 0 and hence, the atom undergoing this decay will not experience a change in its atomic mass.

$_Z^A\textrm{X}\rightarrow _{Z-1}^A\textrm{Y}+_{+1}^0\beta$

Hence, is the large atom decays, only alpha particle will change the atomic mass of that atom.

Answer from: Quest

"among the transition metal elements, manganese and zinc have a slight lowering of electronegativities. the reason behind this is that the nuclear charges of these elements are slightly weaker than the other transition metal elements due to the way their valence electrons are filled up. both manganese and zinc have their valence electrons filled up to the 4th shell with 1 pair of electrons (4s2) completely occupying it. although the electrons in the 3rd shell (3d) are yet to be paired since the outer most shell is filled up, the ability of the nucleus to attract electrons is lessened. hence, the electronegativity (or the ability to attract electrons) is lessened."

Answer from: Quest

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Alarge atom decays and emits a particle. after the reaction is complete, the atom’s mass has changed...

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