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

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

Which of the following scientists was awarded the Nobel Prize in 1911 for the discovery of the radioactive elements, radium and polonium? w) John Dalton x) Dmitri Mendeleev y) Emil Fischer z) Marie Curie

Description : Which of the following scientists was awarded the Nobel Prize in 1911 for the discovery of the radioactive elements, radium and polonium? w) John Dalton x) Dmitri Mendeleev y) Emil Fischer z) Marie Curie

Last Answer : ANSWER: Z -- MARIE CURIE

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

Dmitri Mendeleev created the what?

Description : Dmitri Mendeleev created the what?

Last Answer : Periodic table

Whose name is given to alkylmagnesium halides: w) Victor Grignard x) Daniel Rutherford y) Dmitri Mendeleev

Description : Whose name is given to alkylmagnesium halides: w) Victor Grignard x) Daniel Rutherford y) Dmitri Mendeleev

Last Answer : ANSWER: W -- VICTOR GRIGNARD

This scientist gave the law- ‘Properties of elements are a periodic function of their atomic number.’ This property of the fundamental importance of atomic number was discovered by- (1) Johann Wolfgang Döbereiner (2) John Newlands (3) Dmitri lvanovich Mendeléev (4) Henry Moseley

Description : This scientist gave the law- ‘Properties of elements are a periodic function of their atomic number.’ This property of the fundamental importance of atomic number was discovered by- (1) Johann Wolfgang Döbereiner (2) John Newlands (3) Dmitri lvanovich Mendeléev (4) Henry Moseley

Last Answer : (4) Henry Moseley Explanation: In 1913, Henry Moseley showed that the atomic number of an element is a more fundamental property than its atomic mass as described below.

(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 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

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 ?

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)

What was the basis for Mendeleev classi- fication of elements?

Description : What was the basis for Mendeleev classi- fication of elements?

Last Answer : Atomic weight

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

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.

[SPOILER ALERT!] If you read The Brothers Karamazov, do you think Dmitri killed his father?

Description : [SPOILER ALERT!] If you read The Brothers Karamazov, do you think Dmitri killed his father?

Last Answer : Great book, by the way…

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.

How Mendeleev organized his periodic table?

Description : How Mendeleev organized his periodic table?

Last Answer : By the increasing Atomic Mass.

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

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

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.

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

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.

Why did Mendeleev swap Tellurium and Iodine around?

Description : Why did Mendeleev swap Tellurium and Iodine around?

Last Answer : Iodine has a lower relative Atomic Mass than tellurium, meaning it should come before tellurium following Mendeleev's rule. However, in order to place iodine with the elements that consisted of similar properties, he had to put it after tellurium. Thus breaking his own rule.-Hope this helped :)

Why is Mendeleev important?

Description : Why is Mendeleev important?

Last Answer : He is important because he was the person who invented the Periodic Table and made it how it is today

Why did Mendeleev swap Tellurium and Iodine around?

Description : Why did Mendeleev swap Tellurium and Iodine around?

Last Answer : Iodine has a lower relative Atomic Mass than tellurium, meaning it should come before tellurium following Mendeleev's rule. However, in order to place iodine with the elements that consisted of similar properties, he had to put it after tellurium. Thus breaking his own rule.-Hope this helped :)

Why is Mendeleev important?

Description : Why is Mendeleev important?

Last Answer : He is important because he was the person who invented the Periodic Table and made it how it is today

Laws of heredity was put forward by – (1) Mendel (2) Mendeleev (3) Pavlov (4) Koch

Description : Laws of heredity was put forward by – (1) Mendel (2) Mendeleev (3) Pavlov (4) Koch

Last Answer : (1) Mendel Explanation: The laws of heredity were discovered by Gregor Mendel in about 1856- 1863. Mendel conducted experiments in plant hybridization, collecting the results of crossfertilizing hundreds of ... First Law, and the law of independent assortment, also known as Mendel's Second Law.

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.

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.

Who proposed first atomic theory? (1) E. Rutherford (2) De Broglie (3) John Dalton (4) D. I. Mendeleev

Description : Who proposed first atomic theory? (1) E. Rutherford (2) De Broglie (3) John Dalton (4) D. I. Mendeleev

Last Answer : (3) John Dalton Explanation: Democritus first suggested the existence of the atom but it took almost two millennia before the atom was placed on a solid foothold as a fundamental chemical object by John Dalton (1766-1844).

The names of the scientists; Newlands; Mendeleev; and Meyer are associated with the development of?

Description : The names of the scientists; Newlands; Mendeleev; and Meyer are associated with the development of?

Last Answer : periodic table of contents

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

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.

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

Mendeleev proposed the existence of an unknown element that he called eka-aluminum. The element is now called: w) magnesium x) silicon y) gallium z) germanium

Description : Mendeleev proposed the existence of an unknown element that he called eka-aluminum. The element is now called: w) magnesium x) silicon y) gallium z) germanium

Last Answer : ANSWER: C -- GALLIUM

Laws of heredity was put forward by (1) Mendel (2) Mendeleev (3) Pavlov (4) Koch

Description : Laws of heredity was put forward by (1) Mendel (2) Mendeleev (3) Pavlov (4) Koch

Last Answer : Mendel

In the periodic table of elements, on moving from left to right across a period, the atomic radius – (1) decreases (2) increases (3) remains unchanged (4) does not follow a definite pattern

Description : In the periodic table of elements, on moving from left to right across a period, the atomic radius – (1) decreases (2) increases (3) remains unchanged (4) does not follow a definite pattern

Last Answer : (1) decreases Explanation: The atomic radius is the distance from the atomic nucleus to the outermost stable electron orbital in an atom that is at equilibrium. It tends to decrease across a period from ... usually increases while going down a group due to the addition of a new energy level (shell).

The purpose of stacking elements on an antenna. A. Sharper directional pattern B. increased gain C. Improved bandpass D. All of these

Description : The purpose of stacking elements on an antenna. A. Sharper directional pattern B. increased gain C. Improved bandpass D. All of these

Last Answer : D. All of these

Stacking elements in a transmitting antenna system A. increases the field strength at the receiving antenna B. increases the directivity of the transmitter antenna C. decrease the size of the lobe in the radiation pattern D. both A and B

Description : Stacking elements in a transmitting antenna system A. increases the field strength at the receiving antenna B. increases the directivity of the transmitter antenna C. decrease the size of the lobe in the radiation pattern D. both A and B

Last Answer : D. both A and B

In the periodic table of elements, on moving from left to right across a period, the atomic radius (1) decreases (2) increases (3) remains unchanged (4) does not follow a definite pattern

Description : In the periodic table of elements, on moving from left to right across a period, the atomic radius (1) decreases (2) increases (3) remains unchanged (4) does not follow a definite pattern

Last Answer : increases

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