Advertisements
Advertisements
प्रश्न
Complete the following flow chart.
उत्तर
APPEARS IN
संबंधित प्रश्न
In the Modern Periodic Table, calcium (atomic number 20) is surrounded by elements with atomic numbers 12, 19, 21, and 38. Which of these have physical and chemical properties resembling calcium?
Write the merits of the modern periodic table over Mendeleev’s Periodic table
What is meant by a group, in a periodic table?
Give two example of group 1 elements.
State how the valency of elements varies in a period of the periodic table?
What is a period in a periodic table?
What is a group in the periodic table?
What are the advantages of the periodic table?
What are the periods in a periodic table? Give two characteristics of each.
Name the type of elements which have two outermost shell incomplete.
Answer the following in respect of element `31/15 P `
To which group and period does it belong?
How does the electronic configuration of an atom relate to its position in the modern periodic table?
The electronic configuration of an element T is 2, 8, 8, 1.
What is the period number of T?
Name the noble gas with 3 shells.
What would be the correct order if Zn, Fe, Al and Cu are arranged in increasing order of reactivity?
The horizontal rows in a periodic table are called _____.
In the Modern Periodic Table – atoms of all elements are arranged according to their increasing order of – atomic numbers. An atom of nitrogen has seven protons and seven electrons. State what would be its atomic number.
Name the cation and the anion in the salt – calcium sulphate
Give the symbol and valency of the following element and radical.
Magnesium
Give the symbol and valency of the following element and radical.
Zinc
Give the symbol and valency of the following element and radical.
Nitrogen [Nitride]
Give the symbol and valency of the following element and radical.
Hydroxide
Give the chemical formula of sodium bicarbonate
What are the elements.
What are the periods in a periodic table?
Find the odd one out and give its explanation.
Write scientific reason.
There was ambiguity about the correct position of hydrogen in Mendeleev’s periodic table.
Noble gases belong to______ group of the periodic table.
The scientist who propounded the modern periodic law is ______.
In the modern periodic table, elements are arranged according to their ______
Which of the given elements A, B, C, D and E with atomic number 2, 3, 7, 10 and 30 respectively belong to the same period?
______ group elements are called alkaline earth metals.
An element has the atomic number 12.
- Write the electric configuration.
- To which group and period does it belong.
Select the appropriate options and complete the following paragraph:
(metals, non-metals, metalloids, four, seven, s-block, p-block, d-block, f-block).
On the basis of electronic configuration, elements in the modern periodic table are classified Into ______ blocks. Groups 1 and 2 elements are included in ______ and all these elements are metals. (except Hydrogen). Group 13 to 18 elements are included in ______. This block contains metals, non-metals and metalloids. Group 3 to 12 elements are included in ______ and all the elements are ______ elements shown at the bottom of the periodic table i.e. Lanthanides and Actinides constitute ______ and all these elements are metals.
1H2 is an isotope of hydrogen. In the modern Periodic Table it will ______.
State the group and period, of the element having three shells with three electrons in valence shell.
Name the non-metals in the first twenty elements.
What is the general name of the last elements of the Periodic Table?
An element has 2 electrons in its N shell.
Is it a metal or a non-metal?
