Advertisements
Advertisements
प्रश्न
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.
पर्याय
True
False
Advertisements
उत्तर
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- True
APPEARS IN
संबंधित प्रश्न
In the Modern Periodic Table, calcium (atomic number 20) is surrounded by elements with atomic numbers 12, 19, 21, and 38. Which of these have physical and chemical properties resembling calcium?
What is periodicity in properties of elements with reference to the Modern Periodic Table?
What is meant by a group, in a periodic table?
Which element has the electronic configuration 2, 8, 2?
Name two elements in each case:
Transition element
Name two elements in each case:
Actinides
Which of the following elements will form an acidic oxide?
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?
An element with atomic number ______ will form a basic oxide.
State the group and period, of the element having three shells with three electrons in valence shell.
