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प्रश्न
Give the symbol and valency of the following element and radical.
Ammonium
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उत्तर
| Element/Radical | Symbol | Valency |
| Ammonium | NH4 | one |
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संबंधित प्रश्न
On the basis of electronic configuration, how will you identify chemically similar elements?
What is the number of elements is 1st period the modern periodic table?
(b) What is the number of elements is 3rd period, the modern periodic table?
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.
Give the group number of following elements present in periodic table
Name two elements in Inert gas.
State the modern periodic law.
Give the symbol and valency of the following element and radical.
Sulphite
Give the chemical formula of sodium bicarbonate
State whether true or false. If false, correct the statement.
Lanthanides and actinides are kept at the bottom of the periodic table because they resemble each other but they do not resemble with any other group elements.
