Advertisements
Advertisements
Question
Calculate magnetic moment of thorium (Z=90). Is this element diamagnetic or paramagnetic?
Advertisements
Solution
The electronic configuration of thorium is [Rn] 5f0 6d2 7s2.
the condensed electronic configuration for its divalent cation will be
There are 2 unpaired electrons, so n = 2.
`therefore mu = sqrt(2 (2 + 2)) = sqrt8` BM = 2.83 BM
Spin only magnetic moment of the given ion is 2.83 BM. This element contains two unpaired electrons and hence, it is paramagnetic.
APPEARS IN
RELATED QUESTIONS
Answer the following
Why salts of Sc3⊕, Ti4⊕, V5⊕ are colourless?
Answer the following
Explain the trends in atomic radii of d block elements.
In 3d series, if nuclear charge increases, the shielding effects will ______.
Transition elements have more tendency to form interstitial compounds because _______.
Which alloy is used in the Fischer-Tropsch process in the synthesis of gasoline?
What are interstitial compounds?
Write any four properties of interstitial compounds.
Which of the following elements belongs to first inner transition series?
Which ion has the highest value of theoretical magnetic moment?
Which hydride among the following is the strongest reducing agent?
Select the CORRECT match.
The first element of 3d series is ____________.
The spin only magnetic moment of Mn3+ (Z = 25) in aqueous solution is ____________.
The statement that is INCORRECT about the interstitial compounds is:
How many among the following are ferrous alloys?
Nichrome, chromium steel, bronze, brass, stainless steel, Cupra-nickel.
Which among the following substances is used as a catalyst for thermal decomposition of potassium chlorate?
____________ has the highest electronegativity next to fluorine amongst all the elements.
Which of the following ions has d6 outer electronic configuration?
Which among the following pairs of elements in their respective oxidation states will have same value of effective magnetic moment?
(Atomic number: Sc = 21, Ti = 22, Cr = 24, Co = 27, Ni = 28, Zn = 30)
Identify the soft element from following.
What is the melting point of zinc?
Salts of Ti4+ are colourless. Give reason.
What is the colour of Cu+ ion?
The spin only magnetic moment of Cr3+ cation is ______.
Which element from the following does not exhibit a magnetic moment in the +1 state?
