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serious [3.7K]
4 years ago
5

Compounds of Sc3+ are not colored, but those of Ti3+ and V3+ are. Why? 1. Sc3+ is a stable cation. 2. Ti3+ and V3+ are not stabl

e cations. 3. Sc3+ has no electrons in d orbitals. 4. Ti3+ and V3+ have d electrons present. 5. Sc3+ is not a stable cation. 6. Ti3+ and V3+ are stable cations. 7. Sc3+ has one electron in d orbitals. 8. Ti3+ and V3+ have two d electrons present.
Chemistry
1 answer:
chubhunter [2.5K]4 years ago
6 0

Answer:

3

Explanation:

Scandium has no electron on the d orbital. Remember that transition metals have partially filled d orbital and have the ability to form coloured ion

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PLZ HELP!
Setler [38]

Answer:

The answer is RNA

Explanation:

Each sequence of three nucleotides, called a codon, usually codes for one particular amino acid. (Amino acids are the building blocks of proteins.) A type of RNA called transfer RNA (tRNA) assembles the protein, one amino acid at a time.

7 0
3 years ago
Read 2 more answers
Calculate the number of copper atoms in 2.45 mole of copper
nikdorinn [45]

Answer:

1.48×10²⁴ Cu atoms

Explanation:

For this question you need to use Avogadro's number 6.022×10²³atoms.

2.45 moles of Cu ×\frac{6.022x10x^{23} atoms }{1 mole}= 1.47539×10²⁴ atoms.

The moles cancel out so you are left with atoms.

Since there are 3 significant figures in the question there should be 3 significant figures in your answer, which is 1.48×10²⁴ Cu atoms.

3 0
2 years ago
What is the [H3O+] in a solution of pH 0.60?
madam [21]

Answer:

.25

Explanation:

H+=10^-pH

- Hope that helps! Please let me know if you need further explanation.

6 0
4 years ago
Use the given half reactions to "construct" an electrolytic cell. Zn^2+ + 2 e^--------->Zn E°cell = -0.76 V Cu^2+ + 2 e^-----
Neko [114]

Answer:

See explanation and image attached

Explanation:

The standard cell potential at 298 K is given by;

E°cathode - E°anode

Hence;

E°cell = 0.34 V - (-0.76 V)

E°cell = 0.34 V + 0.76 V

E°cell = 1.1 V

To reduce Zn^2+ to Zn then Zn must be the cathode, hence;

E°cell = (-0.76 V) - 0.34 V

E°cell = -1.1 V

5 0
3 years ago
Gerry is looking at an unknown element. He knows it has 1 valence electron and is highly reactive with water. What group is the
SVEN [57.7K]

Answer:

Group 1

because they have just one valance electron, group 1 elements are very reactiv.

4 0
3 years ago
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