Advertisements
Advertisements
प्रश्न
p-block is composed of groups 1 and 2.
विकल्प
Right
Wrong
Advertisements
उत्तर
p-block is composed of groups 1 and 2- Wrong
संबंधित प्रश्न
Name two elements you would expect to show chemical reactions similar to magnesium. What is the basis for your choice?
How does the electronic configuration of an atom relate to its position in the Modern Periodic Table?
What is periodicity in properties of elements with reference to the Modern Periodic Table?
How does the tendency of elements to gain electrons change as we move from left to right in a period? State the reason of this change.
What is the significance of atomic number in the modern classification of elements? Explain with the help of an example.
How were the positions of isotopes of an element decided in the modern periodic table?
How were the positions of cobalt and nickel resolved in the modern periodic table?
where should hydrogen be placed in the modern periodic table? Give reason for your answer.
On which side of the periodic table will you find metals?
Is it possible to have an element having atomic number 1.5 placed between hydrogen and helium?
The atomic particle whose number in the atoms of an element always remains the same and which forms the real basis for the modern classification of elements is:
(a) electron
(b) proton
(c) neutron
(d) meson
What is the main characteristic of the last elements in the periods of the periodic table? What is the general name of such elements?
The elements A, B, C and D belong to groups 1, 2, 14 and 17 respectively of the periodic table. Which of the following pairs of elements would produce a covalent bond?
(i) A and D
(ii) C and D
(iii) A and B
(iv) B and C
(v) A and C
Name the type of elements which have one electron short of octet.
State the modern periodic law for the classification of elements. How many (i) groups and (ii) periods are there in the modern periodic table?
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?
What is the number of elements in the 1st period?
How does number of (i) valence electrons (ii) valency; vary on moving from left to right in the second period of a periodic table?
The horizontal rows in a periodic table are called _____.
Name the cation and the anion in the salt – calcium sulphate
Give the symbol and valency of the following element and radical.
Sulphur [Sulphide]
Give the symbol and valency of the following element and radical.
Ammonium
Give the symbol and valency of the following element and radical.
Hydroxide
Give the chemical formula of ammonium sulphate
Give the chemical formula of calcium phosphate
Compare Modern Periodic Law with Mendeleev's Periodic Law.
Answer the following question in one sentence.
The modern periodic table is divided into which blocks?
Elements in the modern periodic table are arranged in ______groups and______ periods.
State whether true or false. If false, correct the statement.
Lanthanides and actinides are kept at the bottom of the periodic table because they resemble each other but they do not resemble with any other group elements.
______ and ______ are called inner transition elements.
In the modern periodic table, elements are arranged according to their ______
Which of the following statements about the Modern Periodic Table is correct:
Arrange the following elements in the increasing order of their metallic character
| Mg, | Ca, | K, | Ge, | Ga |
Choose an element from period 3 of modern periodic table that matches the description given below in instance. Give a reason for your choice.
It has a similar structure to diamond.
The maximum number of electrons that can be accommodated in s, p,d, and f subshells are ______.
Explain the position of hydrogen in the periodic table.
Name the non-metals in the first twenty elements.
Match the atomic number with the following:
A rare gas.
