Advertisements
Advertisements
Question
The d-block elements are called as _______ elements.
Options
transition
metalloid
normal
inner transition
Solution
The d-block elements are called as transition elements.
APPEARS IN
RELATED QUESTIONS
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?
What is meant by a group, in a periodic table?
How many periods and groups are there in the long form of periodic table?
How were the positions of isotopes of an element decided in the modern periodic table?
Consider the following elements:
Na, Ca, Al, K, Mg, Li
Which of these elements belong to the same period of the periodic table?
Which element has the electronic configuration 2, 8, 2?
How does the chemical reactivity of alkali metals vary on going in group 1 of the periodic table?
What is the number of valence electrons in the atoms of first elements in a period?
State whether the following statement is true or false:
On going down in a group of the periodic table, the number of valence electrons increases.
On the basis of electronic configuration, how will you identify the first element of a period?
From the standpoint of atomic structure, what determines which element will be the first and which the last in a period the periodic table?
What are the periods in a periodic table? Give two characteristics of each.
Which of the following are the correct characteristics of isotopes of an element?
(i) same atomic mass
(ii) same atomic number
(iii) same physical properties
(iv) same chemical properties
(a) (i), (ii) and (iv)
(b) (ii), (iii) and (iv)
(c) (ii) and (iii)
(d) (ii) and (iv)
Name the scientist who stated the modern periodic law.
What are horizontal rows and vertical columns in a periodic table known as?
Name the metals in the first twenty elements.
Answer the following in respect of element `31/15 P`
Give its electronic configuration
An element barium has the atomic number 56. Look up its position in the periodic table and answer the following question.
Is it larger or smaller than caesium (Cs)?
Name the noble gas with 3 shells.
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?
An element E has following electronic configuration:
|
K |
L |
M |
|
2 |
8 |
6 |
(a) To which group of the periodic table does element E belong?
(b) To which period of the periodic table does element E belong?
(c) State the number of valence electrons present in element E.
(d) State the valency of the element E.
The horizontal rows in a periodic table are called _____.
Give the symbol and valency of the following element and radical.
Hydrogen
Give the symbol and valency of the following element and radical.
Zinc
Give the chemical formula of carbonic acid
What are the periods in a periodic table?
Mendeleev's periodic table : atomic mass : : Modern periodic table : _______
Group 1 and 2 : s block : : group 13 and 18 : _______
The modern periodic table is divided into which blocks?
p-block is composed of groups 1 and 2.
______ is the longest period in the periodical table.
The scientist who propounded the modern periodic law is ______.
______ and ______ are called inner transition elements.
The inert gas which lies in the third period is ______
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.
Explain the position of hydrogen in the periodic table.
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.
Give the criteria on the basis of which elements are placed (i) in a group and (ii) in a period in the modern periodic table. The atomic number of an element is 16. According to the criteria, in which group and period it should be placed?
Name the non-metals in the first twenty elements.
