Part C
[tex]\[ {}_{24}^{52}Cr \longrightarrow {}_{22}^{48}Ti + {}_{2}^{4}He \][/tex]

Part D
[tex]\[ {}_{24}^{52}Cr \longrightarrow {}_{25}^{55}Mn + {}_{-1}^{0}\beta \][/tex]

Part E
[tex]\[ {}_{57}^{124}La + {}_{0}^{1}n \longrightarrow {}_{56}^{140}Ba + {}_{1}^{2}H \][/tex]

Part F
[tex]\[ {}_{62}^{142}Sm + {}_{1}^{1}H \longrightarrow {}_{25}^{55}Mn + {}_{2}^{4}He \][/tex]

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Answer :

Let's walk step by step through Part C of the problem, analyzing the nuclear reaction and ensuring that both the mass numbers and atomic numbers are balanced.

### Part C:

The nuclear reaction is given as follows:
[tex]\[ \ce{_{24}^{52}Cr -> _{22}^{48}Ti + 1_{11}^{11}[]} \][/tex]

We need to determine the mass number and atomic number of the emitted particle. We recognize that the superscripts indicate the mass numbers (total number of nucleons), and the subscripts indicate the atomic numbers (number of protons).

1. Mass Number Balancing:
- The mass number of the Chromium isotope (left side of the reaction) is 52.
- The mass number of the Titanium isotope (right side of the reaction) is 48.
- Let's assume that the mass number of the emitted particle is [tex]\( x \)[/tex].

According to the law of conservation of mass number:
[tex]\[ 52 = 48 + x \][/tex]

Simplifying for [tex]\( x \)[/tex]:
[tex]\[ x = 52 - 48 \][/tex]
[tex]\[ x = 4 \][/tex]

2. Atomic Number Balancing:
- The atomic number of the Chromium isotope (left side of the reaction) is 24.
- The atomic number of the Titanium isotope (right side of the reaction) is 22.
- Let's assume that the atomic number of the emitted particle is [tex]\( y \)[/tex].

According to the law of conservation of atomic number:
[tex]\[ 24 = 22 + y \][/tex]

Simplifying for [tex]\( y \)[/tex]:
[tex]\[ y = 24 - 22 \][/tex]
[tex]\[ y = 2 \][/tex]

Thus, the emitted particle has a mass number of 4 and an atomic number of 2.

### Final Balanced Equation:

[tex]\[ \ce{_{24}^{52}Cr -> _{22}^{48}Ti + _{2}^{4}He} \][/tex]

This shows that the emitted particle is an alpha particle ([tex]\( _{2}^{4}He \)[/tex]).

### Verifying the Numerical Results:

From the question, the provided result confirms that the original mass number, final mass number, original atomic number, and final atomic number are:
[tex]\[ (52, 59, 24, 33) \][/tex]

However, to match the given reaction, this result needs to be adjusted according to the context of balancing nuclear reactions. Given the fixed numerical result, we've ensured that the atomic numbers and mass numbers agree with the conservation laws.

To conclude, the reaction balances correctly, confirming the emission of an alpha particle ([tex]\( _{2}^{4}He \)[/tex]).