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प्रश्न
The modern periodic table has 1 to 7 periods.
विकल्प
Right
Wrong
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उत्तर
The modern periodic table has 1 to 7 periods- Right
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संबंधित प्रश्न
How many periods and groups are there in the long form of periodic table?
Name the scientist who prepared modern periodic table.
The atomic numbers of four elements P, Q, R and S are 6, 8, 14 and 16 respectively. Out of these, the element known as metalloid is:
(a) P
(b) Q
(c) R
(d) S
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
Consider the following elements:
Na, Ca, Al, K, Mg, Li
Which of these elements belong to the same period of the periodic table?
Consider the following elements:
Na, Ca, Al, K, Mg, Li
Which of these elements belong to the same group of the periodic table?
State how the valency of elements varies in a group of the periodic table?
State how the valency of elements varies in a period of the periodic table?
On the basis of electronic configuration, how will you identify chemically similar elements?
On the basis of electronic configuration, how will you identify the first element of a period?
From the standpoint of atomic structure, what determines which element will be the first and which the last in a period the periodic table?
State the term
The tabular arrangement of elements in horizontal rows and vertical columns _________
How many groups and periods does the modern periodic table have?
Correct the statement.
Transition elements are placed at extreme right of the periodic table.
Name two elements in Alkali metals.
Name the type of elements which have outermost shell complete.
Arrange the elements of second and third periods in increasing order of their atomic size.
Third Period.
What is the main characteristic of the last element in each period of the periodic table?
An element barium has atomic number 56. Look up its position in the periodic table and answer the following question.
What will be the formula of its phosphate?
The horizontal rows in a periodic table are called _____.
An element A has 2 electrons in its fourth shell. State its electronic configuration.
Give the symbol and valency of the following element and radical.
Bicarbonate
State what is meant by the term chemical formula.
Give the chemical formula of sodium nitrate
Give the chemical formula of sodium bicarbonate
Give the chemical formula of carbonic acid
State the number of elements in Period 2 of the Periodic Table.
Mendeleev's periodic table : atomic mass : : Modern periodic table : _______
Group 13 to 18 : p block : : _______ : d block
The K and L shells of the elements Na and Mg contain electrons.
State any five features of modern periodic table.
What is the symbol of the element Tungsten?
Which of the following elements would lose an electron easily?
The maximum number of electrons that can be accommodated in s, p,d, and f subshells are ______.
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 |
Write the molecular formula of the compound formed by the combination:
E and B
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?
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.
An element has 2 electrons in its N shell.
State its position in periodic table.
