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प्रश्न
To the left of the zig-zag line in the periodic table are the metal elements.
पर्याय
Right
Wrong
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उत्तर
To the left of the zig-zag line in the periodic table are the metal elements- Right
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संबंधित प्रश्न
Compare and contrast the arrangement of elements in Mendeleev’s periodic Table and the Modern Periodic Table.
What is periodicity in properties of elements with reference to the Modern Periodic Table?
Give two example of group 17 elements.
What is the name of those elements which divide metals and non-metals in the periodic table?
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
State whether the following statement is true or false:
On going down in a group of the periodic table, the number of valence electrons increases.
State how the valency of elements varies in a group of the periodic table?
What is the usual number of valence electrons and valency of group 18 elements of the periodic table?
Explain why, the first period of the periodic table has only two elements whereas second period has eight elements
What is the number of elements is 1st period the modern periodic table?
Name the metals in the first twenty elements.
Name the type of elements which have two electrons in the outermost orbit.
Arrange the elements of second and third periods in increasing order of their atomic size.
Third Period.
Fill in the blank:
The horizontal rows in the periodic table are called _____________.
The electronic configuration of an element T is 2, 8, 8, 1.
What is the group number of T?
The electronic configuration of an element T is 2, 8, 8, 1.
What is the period number of T?
Name an alkali metal in period 3 and halogen in period 2.
An element E has following electronic configuration:
|
K |
L |
M |
|
2 |
8 |
6 |
(a) To which group of the periodic table does element E belong?
(b) To which period of the periodic table does element E belong?
(c) State the number of valence electrons present in element E.
(d) State the valency of the element E.
Name and state the following with reference to the elements of the first three periods of the periodic table.
A covalent compound formed by an element in period 2 and a halogen.
State what the group number in the Modern Periodic Table signifies. Give a reason why elements in the same group, have similar valency and similar chemical properties.
Name the following:
The group of the Modern Periodic Table to which calcium [Ca2+] belongs.
The modern periodic table is divided into which blocks?
Noble gases belong to______ group of the periodic table.
The scientist who propounded the modern periodic law is ______.
Element ‘X’ forms a chloride with the formula XCl2, which is solid with a high melting point. X would most likely be in the same group of the periodic table as: ______
The element which has the least tendency to lose electrons is ______
On moving from left to right in a period in the periodic table, the size of the atom ______
The amount of energy released when one or more electrons is added to the neutral atom is ______
What is the symbol of the element Tungsten?
Which of the following statements about the Modern Periodic Table is correct:
An element which is an essential constituent of all organic compounds belongs to
Which of the following is the outermost shell for elements of period 2?
Which of the following elements would lose an electron easily?
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
Spot the error:
There are 5 periods and 17 groups in the modern periodic table.
Explain the position of hydrogen in the periodic table.
State the group and period, of the element having three shells with three electrons in valence shell.
