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प्रश्न
______ is the longest period in the periodical table.
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उत्तर
The sixth period is the longest period in the periodical table.
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संबंधित प्रश्न
How does the metallic character of elements in Modern Periodic Table vary on moving from left to right in a period, and (ii) down a group?Give reason to justify your answer.
(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.
The electronic configuration of an element T is 2, 8, 8, 1.
What is the group number of T?
Give the chemical formula of calcium phosphate
Name the following:
The group of the Modern Periodic Table to which calcium [Ca2+] belongs.
Write an Explanation.
Period
An element has 2 electrons in its N shell.
Is it a metal or a non-metal?
Answer the following in respect of element \[\ce{_16^32S}\].
To which group and period does it belong?
Give reason for the following:
Inert gases do not form ion.
