Tag: mendeleef's periodic table

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Multiple choice chemistry the periodic table mendeleef's periodic table mendeleev's periodic law and its limitations mendeleev's periodic table development of the modern periodic table into the history

According to Mendleev's periodic law which properties of the elements are the periodic function of their atomic masses?

  1. Physical properties

  2. Chemical properties

  3. Physical and chemical properties both

  4. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

According to Mendeleev's periodic law physical and chemical properties both of the elements are the periodic function of their atomic masses

Multiple choice chemistry the periodic table mendeleef's periodic table mendeleev's periodic law and its limitations mendeleev's periodic table development of the modern periodic table into the history

The properties of the elements, as well as the formulae and properties of their compounds depend in a periodic manner on the atomic weights of the elements. This periodic law was given by :

  1. J. Lothar Meyer

  2. John A. R. Newlands

  3. Dobernier

  4. D.I. Mendleev
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

In 1870 Mendeleev created a table or chart that listed the known elements according to increasing order of atomic weights and when he organized the table into horizontal rows elements with similar chemical properties appeared at regular intervals.

Multiple choice chemistry the periodic table mendeleef's periodic table mendeleev's periodic law and its limitations mendeleev's periodic table development of the modern periodic table into the history

The properties of the elements, as well as the formulae and properties of their compounds depend in a periodic manner on the atomic weights of the elements. This periodic law was given by__________.

  1. J. L. Meyer

  2. John AR. Newlands

  3. Dobernier

  4. D.l. Mendeleev
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Mendeleeve predicted several new elements and accurately predicted the qualities of missing elements like germanium,gallium and scandium. He arranged the elements in the table according to their atomic weight.

Multiple choice chemistry the periodic table mendeleef's periodic table mendeleev's periodic law and its limitations mendeleev's periodic table development of the modern periodic table into the history

In Mendeleev's periodic table, gaps were left for the element to be discovered later on, which of the following elements found a place on the periodic table later on:

  1. germanium

  2. chlorine

  3. silicon

  4. oxygen
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Out of the given options, Oxygen, Silicon and Chlorine were present. He also left gaps of elements to be discovered in future. One such gap was for germanium (Ge).

Multiple choice chemistry the periodic table mendeleef's periodic table mendeleev's periodic law and its limitations mendeleev's periodic table development of the modern periodic table into the history

What type of oxide would Eka-aluminium form?

  1. $EO _3$
  2. $E _3O _2$
  3. $E _2O _3$
  4. $EO$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Eka- Aluminium (E) forms oxide with the same empirical formula is Aluminium oxide. Thus, it forms ${ E } _{ 2 }{ O } _{ 3 }$ oxide.


Hence, option C is correct.

Multiple choice chemistry the periodic table mendeleef's periodic table mendeleev's periodic law and its limitations mendeleev's periodic table development of the modern periodic table into the history

Number of short periods in Mendeleev table is :

  1. $2$
  2. $3$
  3. $4$
  4. $1$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Period number 1, 2 and 3 contain 2, 8 and 8 elements respectively. Other periods contain more than 8 elements. Hence, the first three periods are called as short periods. So, total of 3 short periods are there in Mendeleev periodic table.

Multiple choice chemistry the periodic table mendeleef's periodic table mendeleev's periodic law and its limitations mendeleev's periodic table development of the modern periodic table into the history

The properties of the elements, as well as the formulae and properties of their compounds, depend in a periodic manner on the atomic weights of the elements. This periodic law was given by:

  1. J. Lothar Meyer

  2. John A.R. Newlands

  3. Dobernier

  4. D. I. Mendeleev
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Dmitri Mendeleev formulated the periodic law stating that the properties of elements are a periodic function of their atomic weights.

Multiple choice chemistry the periodic table mendeleef's periodic table mendeleev's periodic law and its limitations mendeleev's periodic table development of the modern periodic table into the history

The anomalous pairs in Mendeleev's periodic table is/are_______.

  1. Co, Ni

  2. Te, I

  3. Ar, K

  4. All the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Anomalous pairs in mendeleev's periodic table are
`
Cu,Ni,Te,I,Ar,K

Anomalous pairs are of consecutive elements. Thus if we observe Mendeleev's periodic table, all the given options form anomalous pairs.