Advertisements
Advertisements
प्रश्न
Give the symbol and valency of the following element and radical.
Oxygen [Oxide]
Advertisements
उत्तर
| Element/Radical | Symbol | Valency |
| Oxygen [Oxide] | O | two |
APPEARS IN
संबंधित प्रश्न
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
How does the chemical reactivity of the halogens vary on going in group 17 of the periodic table?
What happens to the number of valence electrons in the atoms of elements as we go down in a group of the periodic table?
State the main aim of classifying elements. Which is the more fundamental property of elements that is used in the development of Modern Periodic Table? Name and state the law based on this fundamental property. On which side of the periodic table one can find metals, non-metals and metalloids?
Write a short note.
Position of isotopes in the Mendeleev’s and the modern periodic table.
What would be the correct order if Zn, Fe, Al and Cu are arranged in increasing order of reactivity?
An element A has 2 electrons in its fourth shell. State its electronic configuration.
Fill in the blank:
The element lithium in the Modern Periodic Table with valency 1+ belongs to the group ______.
Group 1 and 2 : s block : : group 13 and 18 : _______
Elements in the modern periodic table are arranged in ______groups and______ periods.
