Advertisements
Advertisements
प्रश्न
p-block is composed of groups 1 and 2.
पर्याय
Right
Wrong
Advertisements
उत्तर
p-block is composed of groups 1 and 2- Wrong
APPEARS IN
संबंधित प्रश्न
How does the electronic configuration of an atom relate to its position in the Modern Periodic Table?
Fill in the following blank with suitable word:
Group 18 elements are called ...............
What is the significance of atomic number in the modern classification of elements? Explain with the help of an example.
Consider the following elements:
Na, Ca, Al, K, Mg, Li
Which of these elements belong to the same period of the periodic table?
How would the tendency to lose electrons change as we go from left to right across a period of the periodic table?
What is the usual number of valence electrons in the atoms of the last element in a period?
Explain why All the elements of a period have different chemical properties.
State how the valency of elements varies in a group of the periodic table?
Helium and neon are unreactive gases. What, if anything, do their atoms have in common?
What are the groups in a periodic table? Give two characteristics of each.
Name two elements in each case:
Transition element
How does the electronic configuration of an atom relate to its position in the modern periodic table?
State the main aim of classifying elements. Which is the more fundamental property of elements that is used in the development of Modern Periodic Table? Name and state the law based on this fundamental property. On which side of the periodic table one can find metals, non-metals and metalloids?
How will the tendency to gain electrons change as we go from left to right across a period? Why?
From the standpoint of atomic structure, what determines which elements will be the first and which the last in a period of the periodic table?
How does number of (i) valence electrons (ii) valency; vary on moving from left to right in the second period of a periodic table?
An element A has 2 electrons in its fourth shell. State its electronic configuration.
Answer the following question.
How it can be proved that the basic structure of the Modern Periodic Table is based on the electronic configuration of atoms of different elements?
Give the symbol and valency of the following element and radical.
Aluminium
State what is meant by the term chemical formula.
Give the chemical formula of sodium nitrate
The d-block elements are called as _______ elements.
The modern periodic table shows the molecular masses of the elements in each frame.
Distinguish between:
s-block - p-block
Distinguish between:
Group 17 - Group 18
______ forms the basis of the modern periodic table.
On moving from left to right in a period in the periodic table, the size of the atom ______
The longest period of the Modern Periodic Table is period.
Which of the following elements will form an acidic oxide?
Compare the radii of two species X and Y. Give reasons for your answer.
- X has 12 protons and 12 electrons
- Y has 12 protons and 10 electrons
______ group elements are called alkaline earth metals.
A part of modern periodic table is given below. On its basis, answer the following questions:
| Group No. → | 1 | 2 | 13 | 14 | 15 | 16 | 17 | 18 |
| Period ↓ | ||||||||
| 2 | A | B | ||||||
| 3 | E | D | F | C |
Which of the element is a Metalloid?
An element belonging to 3d series of modern periodic table has spin magnetic moment = 5.92 B.M. in +3 oxidation state. The atomic number of elements are ______.
An element ‘M' has 50% of the electrons filled in the 3rd shell as in the 2nd shell. The atomic number of ‘M’ is ______.
Name two elements that you would expect to show chemical reactions similar to calcium. What is the basis of your choice?
Name the metalloids in the first twenty elements.
Match the atomic number with the following:
A rare gas.
