WorksheetsCCC Class 10 on Quantum and Coordinates
Total questions: 14
Worksheet time: 20mins
Why do transition metals show a lot of chemical similarities within a given period?
The valence s and p electrons affect their chemistry more so than the inner d and f electrons, which do not participate in bonding as easily.
The number of electrons within a given period varies only slightly and is sometimes identical because these metals have more than one ionic form.
All elements in a given period, including the representative elements, have a lot of chemical similarities due to the gradual increase in atomic number.
The transition metals always fill their s and p orbitals first before filling their d orbitals, which affects their chemistry.
None of the answers are correct
Which of the following is incorrect concerning the 3d, 4d, and 5d transition series?
All of the answers are correct
There is a significant increase in radius in going from the 3d to the 4d metals, but the 4d and 5d metals are similar in size.
There is a general decrease in size going from left to right for each of these series due to the increasing nuclear charge.
The separation of hafnium and zirconium found together in nature is difficult due to their similarities in chemistry, which is attributed to their virtually identical sizes.
Cerium through lutetium exhibits what is referred to as the lanthanide contraction.
Which metal ion has a d5 electron configuration?
Pd2+
V2+
Ag+
Fe3+
Co2+
What is the maximum oxidation state expected for vanadium?
+8
+6
+5
+4
+3
Which form of electromagnetic radiation has the longest wavelengths?
gamma rays
radio waves
microwaves
infrared radiation
x-rays
Which of the following frequencies corresponds to light with the longest wavelength?
3.00 × 1013 s–1
4.12 × 105 s–1
8.50 × 1020 s–1
9.12 × 1012 s–1
3.20 × 109 s–1
What is the energy of a photon of blue light that has a wavelength of 475 nm?
4.75 × 10–7 J
4.18 × 10–19 J
6.31 × 1014 J
9.44 × 10–32 J
2.39 × 10–32 J
When a hydrogen electron makes a transition from n = 3 to n = 1, which of the following statements is true?
I.Energy is emitted.
II.Energy is absorbed.
III.The electron loses energy.
IV.The electron gains energy.
V.The electron cannot make this transition.
I, IV
I, III
II, III
II, IV
V
Which of the following is a reasonable criticism of the Bohr model of the atom?
It makes no attempt to explain why the negative electron does not eventually fall into the positive nucleus.
It does not adequately predict the line spectrum of hydrogen.
It does not adequately predict the ionization energy of the valence electron(s) for elements other than hydrogen.
It does not adequately predict the ionization energy of the first energy level electrons for one-electron species for elements other than hydrogen.
It shows the electrons to exist outside of the nucleus.
Which of the following statements best describes the Heisenberg uncertainty principle?
The exact position of an electron is always uncertain.
The velocity of a particle can only be estimated.
It is impossible to accurately know both the exact location and momentum of a particle.
The location and momentum of a macroscopic object are not known with certainty.
The location and momentum of a particle can be determined accurately, but not the identity of the particle.
Which of the following act as bidentate ligand
acetate
oxalate
EDTA
nitrate
The coordination number of Copper in tetra ammine copper (II) sulphate
5
4
2
0
In complex compounds , metal ligand bond is
ionic bond
coordinate bond
covalent bond
Hydrogen bond
EDTA is
hexadentate
bidentate
monodentate
tetra dentate
