How was Mendeleev and periodic table different from those of other chemists of the time?

How was Mendeleev and periodic table different from those of other chemists of the time?
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Do chemists have to memorize all the elements of the periodic table?

Description : Do chemists have to memorize all the elements of the periodic table?

Last Answer : answer:I don't see why they would have to , since most chemists don't work with all elements. On the other hand, just like readers memorized the alphabet and how to spell and ... have similar properties to each other, as well as isotopes of each. Familiarity sometimes breeds more familiarity.

How can chemists state with certainty that no one will discover an element that would appear on the periodic table?

Description : How can chemists state with certainty that no one will discover an element that would appear on the periodic table?

Last Answer : Need answer

(a) Why do we classify elements? (b) What were the two criteria used by Mendeleev in creating his Periodic Table? ... Justify your answer. -Chemistry 9th

Description : (a) Why do we classify elements? (b) What were the two criteria used by Mendeleev in creating his Periodic Table? ... Justify your answer. -Chemistry 9th

Last Answer : (a) It is done so as to study the properties of elements conveniently. (b) Increasing order of atomic mass and similarities in chemical properties (especially nature and formulae of oxide and hydride formed). ... at that time. (e) They will be kept at same slot as they have same chemical properties.

How many elements did Mendeleev introduce the modern periodic table ?

Description : How many elements did Mendeleev introduce the modern periodic table ?

Last Answer : Mendeleev introduced the modern periodic table with 67 elements.

What did Moseley use to reorder the elements of Mendeleev periodic table?

Description : What did Moseley use to reorder the elements of Mendeleev periodic table?

Last Answer : Henry Moseley discovered a relation between X-ray spectra and the atomic number of chemical elements.

How Mendeleev organized his periodic table?

Description : How Mendeleev organized his periodic table?

Last Answer : By the increasing Atomic Mass.

How did Mendeleev arrange the known element in his periodic table?

Description : How did Mendeleev arrange the known element in his periodic table?

Last Answer : He arranged the elements in the increasing order of their atomicmasses and repeating periodic properties.

How did Mendeleev arrange the known elements in this periodic table?

Description : How did Mendeleev arrange the known elements in this periodic table?

Last Answer : Feel Free to Answer

How did Mendeleev arrange the known element in his periodic table?

Description : How did Mendeleev arrange the known element in his periodic table?

Last Answer : He arranged the elements in the increasing order of their atomicmasses and repeating periodic properties.

The names of the scientists, Newlands, Mendeleev and Meyer are associated with the development of (a) Atomic structure (b) Metallurgy (c) Periodic table of elements (d) Discovery of elements

Description : The names of the scientists, Newlands, Mendeleev and Meyer are associated with the development of (a) Atomic structure (b) Metallurgy (c) Periodic table of elements (d) Discovery of elements

Last Answer : Ans:(c)

Who invented the modern Periodic table? (1) Faraday (2) Mendeleev (3) Newton (4) Bohr

Description : Who invented the modern Periodic table? (1) Faraday (2) Mendeleev (3) Newton (4) Bohr

Last Answer : (2) Mendeleev Explanation: Dmitri Mendeleev was a Russian chemist who developed the periodic classification of the elements in 1869 A.D.

Why are isotopes not considered in Mendeleev’s periodic table?Name the elements which are predicted by Mendeleev as eka –silicon and eka –aluminum

Description : Why are isotopes not considered in Mendeleev’s periodic table?Name the elements which are predicted by Mendeleev as eka –silicon and eka –aluminum

Last Answer : Ans.Because Mendeleev gave priority to similarities in properties. Germanium and gallium

What are the important features of Mendeleev periodic table?

Description : What are the important features of Mendeleev periodic table?

Last Answer : Ans: based on(i) increasing atomic mass (ii) similarities in properties of elements.(iii) 63 elements divided in 7 horizontal row called periods and 8 vertical groups

Mendeleev arranged the elements in his periodic table on the basis of

Description : Mendeleev arranged the elements in his periodic table on the basis of

Last Answer : atomic mass.

Who created periodic table? A. Faraday B. Lavoisier C. Arrhenius D. Mendeleev (Answer)

Description : Who created periodic table? A. Faraday B. Lavoisier C. Arrhenius D. Mendeleev (Answer)

Last Answer : D. Mendeleev (Answer)

In his periodic table, Mendeleev could not assign a correct position to

Description : In his periodic table, Mendeleev could not assign a correct position to

Last Answer : Hydrogen

Modern periodic law had been given by (1) Moseley (2) Mendeleev (3) Lother-Mayer (4) Lavoisier

Description : Modern periodic law had been given by (1) Moseley (2) Mendeleev (3) Lother-Mayer (4) Lavoisier

Last Answer : (1) Moseley Explanation: In 1913, H.G.J Moseley in England proved that the more fundamental properties of an element are its atomic number. Therefore he suggested that the basis of classification of elements should be atomic number.

State Mendeleev Periodic Law.

Description : State Mendeleev Periodic Law.

Last Answer : Ans: The chemical and physical properties of the elements are periodic functions of their atomic masses.

Name the person who developed a table of elements which revealed regularities in elemental properties in 1869? w) Theodore Richards x) Antoine Lavoisier y) Dmitri Mendeleev z) Svante Arrhenius

Description : Name the person who developed a table of elements which revealed regularities in elemental properties in 1869? w) Theodore Richards x) Antoine Lavoisier y) Dmitri Mendeleev z) Svante Arrhenius

Last Answer : ANSWER: Y -- DMITRI MENDELEEV

Helium (He), neon (Ne) and argon (Ar) are all colorless, odorless gases with low chemical reactivity. Based on the periodic table, which other element would also have those same properties?

Description : Helium (He), neon (Ne) and argon (Ar) are all colorless, odorless gases with low chemical reactivity. Based on the periodic table, which other element would also have those same properties?

Last Answer : Helium

What is the name of those elements which divide metals and non-metals in the periodic table?

Description : What is the name of those elements which divide metals and non-metals in the periodic table?

Last Answer : Metalloids

What was different about how the alchemist and the early chemists communicated their knowledge?

Description : What was different about how the alchemist and the early chemists communicated their knowledge?

Last Answer : The knowledges were often communicated encoded.

What was different about how the alchemist and the early chemists communicated their knowledge?

Description : What was different about how the alchemist and the early chemists communicated their knowledge?

Last Answer : The knowledges were often communicated encoded.

Two chemists walk into a bar. One of them orders h20. The other one wants h2o too. What happens to the other one? -Riddles

Description : Two chemists walk into a bar. One of them orders h20. The other one wants h2o too. What happens to the other one? -Riddles

Last Answer : He dies because he drank hydrogen peroxide.

To all chemists: What sort of compound would dissolve clothing, yet not at all react with skin and hair?

Description : To all chemists: What sort of compound would dissolve clothing, yet not at all react with skin and hair?

Last Answer : Lots of moths and larva can eat clothes and leave skin and hair alone. Biology not chemistry. I hope it helps. Have fun making a slime monster.

Chemists or fans of chemistry out there: Which chemist on the radio/TV etc. do you like?

Description : Chemists or fans of chemistry out there: Which chemist on the radio/TV etc. do you like?

Last Answer : I’d have to admit Albert Hofmann stands out. I wish his discovery had been allowed to be researched professionally. And if ethno-botany counts, then Terrence McKenna tops my list because of his contributions to psilocybin and dimethyltriptamine research.

Calling all Chemists . . . what the Hell happened? (details inside)

Description : Calling all Chemists . . . what the Hell happened? (details inside)

Last Answer : I know the following. Garlic contains lots of sulfer. Sulfer will combine with copper to form copper sulfate which is aquamarine. Some cooking utensils or pots and pans that are copper will do that. ... Are you sure it was garlic and not some alien product like in Invasion of the Body Snatchers?

Fellow fluther chemists, and/or machinists, how would you solve this?

Description : Fellow fluther chemists, and/or machinists, how would you solve this?

Last Answer : answer:Depending on how sharp the curves are in the tube you might be able to get the rest of the blockage out with a power drill and the proper bit and speed using a flexible shaft attachment similar to ... want to tape some heavy guage wire to it so you have more control. Anyway, just a thought.

Kitchen chemists: Will this cookie recipe end in disaster (see details please)

Description : Kitchen chemists: Will this cookie recipe end in disaster (see details please)

Last Answer : Wy can’t you add the remaining softened butter now? Just mix gently with the chips in.

Any chemists out there?

Description : Any chemists out there?

Last Answer : answer:Many elements do. The energy required to remove a single electron from the highest occupied energy level is called the first ionization energy. The energy needed to remove a second electron from the ... ) is increasing so the electrons are held more tightly. Does that clear a few things up?

For Microbiologists, Chemists, Researchers – Can you think of a use for this material in your work?

Description : For Microbiologists, Chemists, Researchers – Can you think of a use for this material in your work?

Last Answer : Im not an expert but Ive got a feeling that its probably got a very good use in nanotechnology in some way. Is the inside hollow? Might be good for holding micro bacteria or Viruses.

What were the chemists in medieval Arabia called ?

Last Answer : Chemistry researchers in medieval Arabia were called alchemists.

Why Do Chemists Need To Invent A New Counting Unit?

Description : Why Do Chemists Need To Invent A New Counting Unit?

Last Answer : Feel Free to Answer

Why chemists might sometimes store reactive chemicals in argon An. To which family does argon belong?

Description : Why chemists might sometimes store reactive chemicals in argon An. To which family does argon belong?

Last Answer : What is the answer ?

A refrigerator operating in a chemist's shop is an example of - (1) free good (2) final good (3) producers good (4) consumer's good

Description : A refrigerator operating in a chemist's shop is an example of - (1) free good (2) final good (3) producers good (4) consumer's good

Last Answer : (2) final good Explanation: Final goods are goods that are ultimately consumed rather than used in the production of another good. For example, a car sold to a consumer is a final good; the ... tires sold to the car manufacturer are not; they are intermediate goods used to make the final good.

Ancient Chemists were known as?

Description : Ancient Chemists were known as?

Last Answer : Alchemists

Ancient Chemists were known as?

Description : Ancient Chemists were known as?

Last Answer : Alchemy

___ play an important role in the development of new foods and nonfood uses. a. Bakers c. Chemists b. Butchers d. Inspectors

Description : ___ play an important role in the development of new foods and nonfood uses. a. Bakers c. Chemists b. Butchers d. Inspectors

Last Answer : c. Chemists

Which of the following chemists was the first to use letters as symbols for elements? w) Ernest Oliver Lawrence x) Louis Andrew Proust y) Jons Jacob Berzelius z) none of these

Description : Which of the following chemists was the first to use letters as symbols for elements? w) Ernest Oliver Lawrence x) Louis Andrew Proust y) Jons Jacob Berzelius z) none of these

Last Answer : ANSWER: Y -- JONS JACOB BERZELIUS

Marie Curie shared the 1911 Nobel Prize in chemistry with two fellow chemists. Name them.

Description : Marie Curie shared the 1911 Nobel Prize in chemistry with two fellow chemists. Name them.

Last Answer : ANSWER: PIERRE CURIE and (A. HENRI) BECQUEREL

A refrigerator operating in a chemist’s shop is an example of (1) free good (2) final good (3) producers good (4) consumer’s good

Description : A refrigerator operating in a chemist’s shop is an example of (1) free good (2) final good (3) producers good (4) consumer’s good

Last Answer : final good

What groups of elements should have very different chemical properties in the periodic table?

Description : What groups of elements should have very different chemical properties in the periodic table?

Last Answer : Feel Free to Answer

A sulphate salt of group 2 element of the periodic table is white ,soft substance which can be moulded into different shapes by making its dough.Identify the salt . (a) CaSO4.1/2 H2O (b) CaSO4.2H2O (c) 2CaSO4. 1⁄2 H2O (d)CaSO4

Description : A sulphate salt of group 2 element of the periodic table is white ,soft substance which can be moulded into different shapes by making its dough.Identify the salt . (a) CaSO4.1/2 H2O (b) CaSO4.2H2O (c) 2CaSO4. 1⁄2 H2O (d)CaSO4

Last Answer : (a) CaSO4.1/2 H2O

Give reason: In the first period, hydrogen and helium are not placed adjacent to each other OR There is a big gap between hydrogen and helium in the periodic table.

Description : Give reason: In the first period, hydrogen and helium are not placed adjacent to each other OR There is a big gap between hydrogen and helium in the periodic table.

Last Answer : Because Hydrogen and Helium belong to different groups. The Hydrogen element belongs to the 'Hydrogen' group, whereas the Helium element belongs to the 'noble gas'

Mendeleev was a scientist from which country ?

Description : Mendeleev was a scientist from which country ?

Last Answer : Mendeleev was a Russian scientist.

Mendeleev is a citizen of which country ?

Description : Mendeleev is a citizen of which country ?

Last Answer : Mendeleev is a Russian citizen.

What was arranged into a systemic chart by Dmitri mendeleev?

Description : What was arranged into a systemic chart by Dmitri mendeleev?

Last Answer : Feel Free to Answer

What did Dmitri mendeleev have to do to unlock the hidden pattern of the elements?

Description : What did Dmitri mendeleev have to do to unlock the hidden pattern of the elements?

Last Answer : What is the answer ?

What did mendeleev do with the elements that did not fit?

Description : What did mendeleev do with the elements that did not fit?

Last Answer : What is the answer ?

What question did Mendeleev use to guide his science inquiry?

Description : What question did Mendeleev use to guide his science inquiry?

Last Answer : Need answer