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प्रश्न
Name the type of elements which have two outermost shell incomplete.
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उत्तर
Transition elements
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संबंधित प्रश्न
Fill in the following blank with suitable word:
Group 17 elements are known as ...............
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
Which element has the electronic configuration 2, 8, 2?
Name two elements in halogens.
Name two elements in Inert gas.
Give the symbol and valency of the following element and radical.
Chlorine [Chloride]
State the number of elements in Period 1 of the Periodic Table.
In the modern periodic table, the positions of 1 to 20 elements are shown here. Identify the elements A and B. Write their atomic number.
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:
A and F
1H2 is an isotope of hydrogen. In the modern Periodic Table it will ______.
