Mendeleev's Periodic Table and Law

Q.

According to Mendeleev’s Periodic Law, the elements were arranged in the periodic table in the order of increasing atomic numbers.

1. True

2. False

Q.

Use Mendeleev's Periodic Table to predict the formula of

(a) hydrides of carbon and silicon

(b) oxides of potassium, aluminium and barium.

Q.

Noble gases did not find a place in Newland's Octaves. Explain. [2 MARKS]

Q.

(a) Name an element whose properties were predicted on the basis of its position in Mendeleev's periodic table.

(b) Name two elements whose atomic weights were corrected on the basis of their positions in Mendeleev's periodic table.

(c) How many elements were known at the time of Mendeleev's classification of elements ?

Q. Mendeleev predicted the existence of some elements that had not been discovered at that time and left some gaps in his periodic table. What are the names that he had given to the two undiscovered elements, gallium and germanium, respectively?

1. Eka-silicon and Eka-aluminium
2. Eka-aluminium and Eka-boron
3. Eka-aluminium and Eka-silicon
4. Eka-boron and Eka-aluminium

Q.

State Mendeleev's periodic law.

Q. In a shop, all soaps are kept together at one place while biscuits are kept together elsewhere. Even among soaps, bathing soaps are stacked separately from washing soaps. Such kind of arrangement is technically called as ‘classification’. Similarly, scientists brought order from chaos with an orderly arrangement of elements. Such arrangement of chemical elements is named as:

1. Chemistry Table
2. Chemical Table
3. Periodic Table
4. Classified Table

Q.

Fill in the blanks based on features of Mendeleevs periodic table:

The elements in group VIII have -------- properties.

Q.

Newland proposed Law of octaves by noticing similar properties across 8 elements when arranged in increasing order.

1. True

2. False

Q.

Good afternoon

My name is VANDITA YADAV and I am student of BYJUS 9th grade.

Good afternoon

My name is VANDITA YADAV and I am student of BYJUS 9th grade.

My doubt is related with chemistry : Do we have to learn the periodic table or just need to understand it.

Q.

Law which states that properties of element are the periodic function of their atomic masses______________

Q. What is mole concept I could not understand

Q.

Answer the following question regarding the modern version of Mendeleevs periodic table.

• Were the elements of the group on the extreme left hand known when Mendeleev made periodic table?
• Name all the elements of this group in the ascending order of atomic numbers.

Q. Which chemical compounds of elements were used by Mendeleev to gauge their chemical similarities
1)Oxides
2)Chlorides
3)Hydrides
4)Sulphites


This is a multi choice question and more than 1 option can be chooses and it's there in Byjus test paper 2.Wanted to clear the doubt

Q.

Which table is known as a long-form of the periodic table?

Q.

Mendeleev predicted the existence of certain elements not known at that time and named two of them as Eka-Silicon and Eka-Aluminium.
Name the elements which have taken the place of these elements

1. Germanium (Ge), Gallium (Ga)

2. Germanium (Ge), Silicon (Si)

3. Aluminum (Al), Silicon (Si)

4. Lithium (Li), Gallium (Ga)

Q. According to Mendeleev’s Periodic Law, the properties of elements are the periodic function of their ___.

1. Atomic numbers
2. Atomic density
3. Atomic volume
4. Atomic masses

Q.

Answer the following question regarding the modern version of Mendeleevs periodic table.

What are groups?

Q. name three elements discovered after mendeleev give his periodic table?

Q. In the Mendeleev's periodic table the elements with similar chemical properties are in the same . [1 Mark]

(a) octave
(b) period
(c) triad
(d) group

Q. Statement 1: Mendeleev's periodic law states that the properties of elements are the periodic function of their atomic mass.

Statement 2: The modern periodic law states that the properties of elements are the periodic function of their atomic number.

1. Both statement 1 and statement 2 are false.
2. Both statement 1 and statement 2 are true.
3. Statement 1 is false and statement 2 is true.
4. Statement 1 is true but statement 2 is false.

Q. Consider the following statements:
(a) The discovery of inert gases later on did not disturb Mendeleev's arrangement.
(b) In his classification of element, Mendeleev was guided proportional to two factors.
(c) In the present periodic table, periodicity in the properties of elements is related to the periodicity in their electronic configurations.

1. Only (a)
2. (a) and (b)
3. Only (c)
4. (a), (b) and (c)

Q.

Answer the following question regarding the modern version of Mendeleevs periodic table.

Name the total number of groups which are further subdivided into subgroup A and B.

Q.

Which chemical compounds of elements were used by Mendeleev to gauge their chemical similarities?

1. Oxides

2. Chlorides

3. Hydrides

4. Sulphides

Q.

According to Mendeleev’s Periodic Law, the properties of elements are the periodic function of their ___.

1. Atomic masses

2. Atomic density

3. Atomic volume

4. Atomic numbers