Question
Asked Dec 22, 2019
2 views
  • The lanthanide contraction explains which of the following periodic trends?
  1. The atomic ratio of the transition metals first decrease and then increase when moving horizontally across each period.
  2. When forming ions the transition metals lose their valence s orbitals before their valence d orbitals.
  3. The radii of the period 5 transition metals are very similar to the radii of the period 6 transition metals.
check_circle

Expert Answer

Step 1

In rare earth elements, the size of atoms and ions gradually decreases with increasing atomic number from lanthanum to lutetium across period.  The atoms across period in which the nuclear charge increase by one unit with increasing number of elect...

Want to see the full answer?

See Solution

Check out a sample Q&A here.

Want to see this answer and more?

Solutions are written by subject experts who are available 24/7. Questions are typically answered within 1 hour.*

See Solution
*Response times may vary by subject and question.
Tagged in

Science

Chemistry

Related Chemistry Q&A

Find answers to questions asked by student like you
Show more Q&A
add
question_answer

Q: For each of the following compounds determine the electron configuration of the transition metal ion...

A: The oxidation state of Ti in TiO is +2. The electronic configuration of Ti+2 is given by,

question_answer

Q: A formula unit of potassium sulfide (K2S) would consist of what particles?

A: Click to see the answer

question_answer

Q: At high pressures, real gases do not behave ideally. Calculate the pressure exerted by 13.5 g H2 at ...

A: The Van der waals equation is given by

question_answer

Q: Calculate the energy of electromagnetic radiation emitted from a radio station with a frequency of 9...

A: Given,Frequency = 96.1MHz = 96.1×106 Hz.Then,

question_answer

Q: Addition of HCl to an alkene forms 2-chloropropane. What is the alkene?

A: The addition of halogen molecule across the double bond of unsaturated hydrocarbons is termed as a h...

question_answer

Q: Question is attached as a picture. Thank you!

A: Diels-Alder reaction:During this reaction, three pi bonds will get broken; two sigma bonds and one n...

question_answer

Q: A gaseous mixture consists of 1.33 mol of helium, 0.36 mol of neon, and 1.58 mol of argon. a. What i...

A: Total number of moles present in the gaseous mixture is,

question_answer

Q: Use decimal notation to express 4.22 mg in grams?

A: When we convert grams to milligrams, the conversion factor is

question_answer

Q: what are drawbacks of bohr atomic model?

A: Bohr’s atom model is only primarily for hydrogen atom.It could not explain spectra of multi-electron...