give the total number of protons and electrons in each atom
Cr2+ 24 protons 22 electrons
Cr3+ 24 protons 21 electrons
Ni3+ 28 protons 25 electrons
Ni4+ 28 protons 24 electrons
All of these look ok to me. Good work.
To find the total number of protons and electrons in each atom, you need to consider the atomic number and the charge of the ion.
1. For Cr2+, the atomic number of chromium (Cr) is 24. The atomic number represents the number of protons in an atom. Since it has a positive 2 charge, this means it lost 2 electrons. Therefore, Cr2+ has 24 protons and 22 electrons.
2. For Cr3+, the atomic number is still 24. Since it has a positive 3 charge, it lost 3 electrons. Therefore, Cr3+ has 24 protons and 21 electrons.
3. For Ni3+, the atomic number of nickel (Ni) is 28. Since it has a positive 3 charge, it lost 3 electrons. Therefore, Ni3+ has 28 protons and 25 electrons.
4. For Ni4+, the atomic number is still 28. Since it has a positive 4 charge, it lost 4 electrons. Therefore, Ni4+ has 28 protons and 24 electrons.
Remember, the atomic number represents the number of protons in an atom, and the charge determines the gain or loss of electrons.
To determine the total number of protons and electrons in each atom, we need to consider the atomic number and the charge of the ion.
1. Cr2+:
- Atomic number of chromium (Cr) is 24.
- Since it is a positive ion (+2), it has lost 2 electrons.
- Total number of protons: 24
- Total number of electrons: 24 - 2 = 22
2. Cr3+:
- Atomic number of chromium (Cr) is 24.
- Since it is a positive ion (+3), it has lost 3 electrons.
- Total number of protons: 24
- Total number of electrons: 24 - 3 = 21
3. Ni3+:
- Atomic number of nickel (Ni) is 28.
- Since it is a positive ion (+3), it has lost 3 electrons.
- Total number of protons: 28
- Total number of electrons: 28 - 3 = 25
4. Ni4+:
- Atomic number of nickel (Ni) is 28.
- Since it is a positive ion (+4), it has lost 4 electrons.
- Total number of protons: 28
- Total number of electrons: 28 - 4 = 24
Therefore, the total number of protons and electrons in each atom are as follows:
1. Cr2+: 24 protons, 22 electrons
2. Cr3+: 24 protons, 21 electrons
3. Ni3+: 28 protons, 25 electrons
4. Ni4+: 28 protons, 24 electrons