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प्रश्न
Name the scientist who stated the modern periodic law.
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उत्तर
Henry Moseley stated the modern periodic law.
संबंधित प्रश्न
Write the merits of the modern periodic table over Mendeleev’s Periodic table
Fill in the following blank with suitable word:
Group 18 elements are called ...............
Which element has the electronic configuration 2, 8, 2?
Which of the following are the correct characteristics of isotopes of an element?
(i) same atomic mass
(ii) same atomic number
(iii) same physical properties
(iv) same chemical properties
(a) (i), (ii) and (iv)
(b) (ii), (iii) and (iv)
(c) (ii) and (iii)
(d) (ii) and (iv)
Correct the statement.
Transition elements are placed at extreme right of the periodic table.
State the modern periodic law for classification of elements. How many (i) groups and (ii) periods are there in the modern periodic table?
The longest period of the Modern Periodic Table is period.
Arrange the following elements in the increasing order of their metallic character
| Mg, | Ca, | K, | Ge, | Ga |
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?
Answer the following in respect of element \[\ce{_16^32S}\].
Give its formula with hydrogen.
