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प्रश्न
To the left of the zig-zag line in the periodic table are the metal elements.
पर्याय
Right
Wrong
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उत्तर
To the left of the zig-zag line in the periodic table are the metal elements- Right
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संबंधित प्रश्न
Nitrogen (atomic number 7) and phosphorus (atomic number 15) belong to group 15 of the Periodic Table. Write the electronic configuration of these two elements. Which of these will be more electronegative? Why?
State modern periodic law.
Fill in the following blank with suitable word:
Group 17 elements are known as ...............
The modern periodic table was prepared by ______.
Which element has the electronic configuration 2, 8, 2?
What is the usual number of valence electrons in the atoms of the last element in a period?
On the basis of electronic configuration, how will you identify the first element of a period?
What are the merits of the modern periodic table of 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.
How many groups and periods does the modern periodic table have?
Name two elements in Inert gas.
Name the type of elements which have outermost shell incomplete.
Name the type of elements which have two electrons in the outermost orbit.
Answer the following in respect of element `31/15 P `
To which group and period does it belong?
What is the main characteristic of the last element in each period of the periodic table?
Name the noble gas with 3 shells.
State the modern periodic law for classification of elements. How many (i) groups and (ii) periods are there in the modern periodic table?
How does number of (i) valence electrons (ii) valency; vary on moving from left to right in the second period of a periodic table?
An element A has 2 electrons in its fourth shell. State its electronic configuration.
Name the cation and the anion in the salt – calcium sulphate
Give the symbol and valency of the following element and radical.
Calcium
Give the symbol and valency of the following element and radical.
Chlorine [Chloride]
Give the symbol and valency of the following element and radical.
Ammonium
Give the chemical formula of sodium nitrate
The groups 1 and 2 constitute the _______ block.
Distinguish between:
s-block - p-block
The inert gas which lies in the third period is ______
What is the symbol of the element Tungsten?
“Hydrogen occupies a unique position in Modern Periodic Table”. Justify the statement.
Three elements A, B and C have 3, 4 and 2 electrons respectively in their outermost shell. Give the group number to which they belong in the Modern Periodic Table. Also, give their valencies.
If an element X is placed in group 14, what will be the formula and the nature of bonding of its chloride?
Choose an element from period 3 of modern periodic table that matches the description given below in instance. Give a reason for your choice.
It has variable valency and is a member of the Oxygen family (group 16).
Spot the error:
The elements of group 13 are called the carbon family.
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 |
Which of the element is a Noble gas?
- Write the electronic configuration of element X, given by its symbol as under: \[\ce{^40_20 X}\]
- Determine its position in the modem periodic table.
- What is the nature of its oxide?
- Name one other element of its group.
Name the non-metals in the first twenty elements.
What is the general name of the last elements of the Periodic Table?
Answer the following in respect of element \[\ce{_16^32S}\].
To which group and period does it belong?
