Mendeleev's Periodic Table

Q.

Tricks to learn f block of periodic table

Q.

Which important property did Mendeleev use to classify the elements in his periodic table and did he stick to that?

Q.

Name two elements whose atomic weights are corrected on the basis of their positions in the Mendeleev periodic table.

Q. Which of the following is drawback of Mendeleev’s periodic table :

1. He arranged the known elements in the order of their increasing atomic masses
2. None of the above
3. He helped in predicting the discovery of new elements
4. Iodine having lower atomic mass than Tellurium was placed ahead of Tellurium.

Q. Eka-aluminium and Eka-silicon are respectively known as?

1. Gallium and germanium
2. Aluminium and silicon
3. Carbon and nitrogen
4. Iron and sulphur

Q. what does first and second series in periods of mendeleevs periodic table mean?

Q. One of the major demerits of Mendeleev’s Periodic Table is:

1. It helped in predicting the discovery of new elements.
2. None of the above
3. He arranged the known elements in the order of their increasing atomic number
4. Mendeleev's periodic table was unable to locate hydrogen in the periodic table

Q.

What were the achievements of Mendeleevs periodic table? what were the basic properties of elements considered by Mendeleev for their classification?

Q. Which of the following is the drawback of Mendeleev’s periodic table :

1. The periodic table was unable to locate the position of hydrogen
2. Iodine having lower atomic mass than Tellurium was placed ahead of Tellurium
3. The known elements were arranged in the order of their increasing atomic masses
4. All of these

Q.

Scientist who modified Mendeleevs periodic table___________

Q.

Write the drawbacks in mendeleef's periodic table that led to its modification.

Q. Zn converts its molten state to its solid state. If it has hcp structure, then find out number of nearest atoms.

1. $6$
2. $8$
3. $4$
4. $12$

Q. What is/are the drawback(s) of Mendeleev's periodic table?

1. Placing of $H$ was not decided
2. Both (a) and (c)
3. Gaps for new elements were left
4. Position of isotopes were not defined

Q. What is/are the drawback(s) of Mendeleev's periodic table?

1. Placing of $H$ was not decided
2. Gaps for new elements were left
3. Position of isotopes were not defined
4. Both (a) and (c)

Q.

Mendeleev periodic table was discarded because of the fact that

1. Many elements have several isotopes.

2. Noble gases form many compounds.

3. Atomic weight are not always whole number

4. Some groups stand divided into sub-groups.

Q. Besides gallium, which two other elements have since been discovered for which Mendeleev had left gaps in his Periodic Table? Using atomic masses of Li, NaLi, Na, find the average atomic mass of and compare it with the atomic mass of. State the conclusion drawn from this activity.

Q. Who developed a long form of the periodic table?

1. Mosely
2. Mandeleev
3. Neil Bohr
4. Lothar Meyer

Q. What is/are the main contributions of Mendeleev’s Periodic Table?

1. Systematic study of elements
2. Prediction of new elements
3. Correction of doubtful atomic weight
4. All of these

Q.

State description of Mendeleevs periodic table of elements.

Q. True or False
In Mendeleev's periodic table, elements are arranged in an increasing order of their atomic number.

Q.

What was the basis of classification of the elements by Mendeleev?

Q. Arrange the following statements in a chronological order.
(a) Some elements be grouped in set of three elements in the increasing order of their atomic weights in which the atomic weight of the middle element was found to be the arithmetic mean of the atomic weights of the other two elements.
(b) The physical and chemical properties of elements are periodic functions of their atomic numbers.
(c) The physical and chemical properties of elements are periodic functions of their atomic weights.
(d) When elements are arranged in the increasing order of their atomic weights, the eighth element resembles the first in physical and chemical properties just as the eighth note on a musical scale resemble the first one.

1. a c d b
2. b d c a
3. a d c b
4. d b a c

Q. State and explain modern periodic table and modern periodic law ?

Q. According to Henry Moseley ______________ is the fundamental property of an element.

1. atomic number
2. atomic mass
3. valency
4. electronic configuration

Q. An inert gas is a gas that is:

1. Non-reactive
2. Highly reactive
3. Both a and b
4. None of above

Q.

WHAT PHYSICAL PROPETIES OF ELEMENTS WHERE USED BY MENDELEEV IN CREATING HIS PERIODIC TABLE

Q. Eka-aluminium and Eka-silicon are respectively known as?

1. Gallium and germanium
2. Iron and sulphur
3. Aluminium and silicon
4. Carbon and nitrogen

Q.

What was the basis of Mendeleev’s classification of elements?

Q. What is the basis of Mendeleev's periodic Law ?

Q. Which of the following statement is incorrect regarding the Mendeleev's periodic table?

1. It has made the study of elements easier and systematic.
2. It has helped in correcting the doubtful atomic weights.
3. It has paved the way for the discovery of new elements.
4. Isotopes of the elements were placed at the same position in the periodic table.