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    lanthanide series

    (also, lanthanoid series) lanthanum and the elements in the first row or the f -block, atomic numbers 57–71

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Questions & Answers

what's organic chemistry
Ben Reply
what is isomer
Asubiojo Reply
guys pls who knows every thing abt solubility curve .
Faith Reply
no one knows everything
Ben
But I know things about solubility curve
Ben
which one of the Lewis structure
muktar Reply
Lewis structure just shows Valence electrons
Cassie
true
Ben
what is a solution
Joy Reply
A liquid mixture in which the minor component (the solute) is uniformly distributed within the major component (the solvent).
Gabby
what is an acid and base
Joy
acids are substances that ionize (break off) in an aqueous solution to produce hydrogen (H+) ions. pH level less than 7  bases produce hydroxide (OH-) ions in solution. pH level greater than 7
Gabby
An acid is a substances when dissolve in water to produce hydrogen ion as the only positive ion or proton. while base is a substances when dissolve in water to produce hydroxide ion .
Lawal
acid is a substance that produce hydrogen ion as only positive ion when dissolve in water
Ayomide
what is flame
Daniel Reply
my new mix tape
Jake
What is Stoichiometry?
sayyam Reply
sir I don't know
favour
the relationship between the relative quantities of substances taking part in a reaction or forming a compound, typically a ratio of whole integers.
Gabby
A radioactive subtance has a half life of 20hrs what fraction of the original radioactive nuclear will remain in 80hrs
Onyewuchi Reply
1/16th
Ian
general properties of transition metal
Abdullahi Reply
form stable complexes Have high melting and boiling points Contain large charge/radius ratio Form compounds which are often paramagnetic Are hard and possess high densities Form compounds with profound catalytic activity Show variable oxidation states form coloured ions and compounds.
Gabby
pls how do i learn chemistry
am just tried of it😭🙏
Same here
Brianna
organic chem tutor, hell teach you everything.. take notes clearly in a notebook and read it before you go to sleep until you know every topic like the back of your hand
Professor
I find it very hard to understand and remember things I read please I need help. Is just as if chemistry is difficult to me
Precious
may God help us. .me writing jamb this year
pray it will favour me
get good or find something else. don't do it if you don't love it
Professor
what is dative bond?
Aleesa Reply
A coordinate covalent bond, also known as a dative bond or coordinate bond is a kind of 2-center, 2-electron covalent bond in which the two electrons derive from the same atom.
dharshika
how can i write iupac nunber
Emmanuel
In chemical nomenclature, the IUPAC nomenclature of organic chemistry is a method of organic chemical compounds as recommended by the International Union of Pure and Applied Chemistry. It is published in the Nomenclature of Organic Chemistry
Nike
How can I know the logic for writing the configuration of an element?
Brianna
s and p diagram
Papa
I dont understand that
Brianna
what is elemental composition of earth
grace Reply
what if we try copper and the hydrogen what happened
Elizabeth Reply
law of definite proportion
Victor Reply
Law of Definite Proportion states that all pure samples of the same chemical compound contains the same elements in proportion by mass
Eunice
what is chemistry
Amos Reply
It is that branch of Science which deals with the study of composition, structure and properties of matter .... Ok
ShAmy
The branch of natural science that deals with the constitution of substances and the changes that they undergo as a consequence of alterations in the constitution of their molecules
Young
what is the constitution of substance
ShAmy
chemistry is the study of matter and the changes it undergoes.
Bernard

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Source:  OpenStax, Chemistry. OpenStax CNX. May 20, 2015 Download for free at http://legacy.cnx.org/content/col11760/1.9
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