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प्रश्न
Give the symbol and valency of the following element and radical.
Magnesium
उत्तर
| Element/Radical | Symbol | Valency |
| Magnesium | Mg | two |
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संबंधित प्रश्न
Fill in the blank:
The modern periodic table consists of ……………. periods.
Explain why All the elements of a period have different chemical properties.
Explain why, the first period of the periodic table has only two elements whereas second period has eight elements
The following diagram shows a part of the periodic table in which the elements are arranged according to their atomic numbers. (The letters given here not the chemical symbols of the elements):
| a 3 |
b 4 |
c 5 |
d 6 |
e 7 |
f 8 |
g 9 |
h 10 |
|
| i 11 |
j 12 |
k 13 |
l 14 |
m 15 |
n 16 |
o 17 |
p 18 |
(i) Which element has a bigger atom, a or f?
(ii) Which element has a higher valency, k or o?
(iii) Which element is more metallic i or k?
(iv) Which element is more non-metallic, d or g?
(v) Select a latter which represents a metal of valency 2.
(vi) Select a letter which represents a non-metal of valency 2.
Write a short note.
Position of isotopes in the Mendeleev’s and the modern periodic table.
Compare Modern Periodic Law with Mendeleev's Periodic Law.
What are groups and periods in the modern periodic table?
Which of the following is the outermost shell for elements of period 2?
Group 16 elements are collectively called as ______.
Define periods of modern periodic table.
