Advertisements
Advertisements
प्रश्न
The similarities in the properties of a group of elements are because they have the same ______.
विकल्प
electronic configuration
number of outer electrons
atomic numbers
Advertisements
उत्तर
The similarities in the properties of a group of elements are because they have the same number of outer electrons.
APPEARS IN
संबंधित प्रश्न
How does the electropositive character of elements change on going down in a group of the periodic table?
How do atomic structures (electron arrangements) change in a period with increase in atomic numbers from left to right?
How does the tendency to gain electrons change as we go down in group 17 of the periodic table? Why does it change this way?
Where would you locate the element with electronic configuration 2, 8 in the modern periodic table?
Correct the statements.
Elements in the same periods have equal valency.
What do you understand by periodicity?
How do the following change on moving from left to right in a period of the periodic table?
Give examples in support of your answer.
atomic structure (electron arrangements) ?
What will be the valency of an element of atomic number 9 (nine)?
Complete the table pertaining to the following elements given in Column I.
| Column I Elements | Atomic Number | Electronic Configuration | Underline the element present in that group |
| 1. Hydrogen | 1 | ______ | Be/Na/Ca |
| 2. Carbon | 6 | ______, ______ | N/P/Si |
| 3. Nitrogen | 7 | _______, ______ | C/P/S |
| 4. Oxygen | 8 | _______, ______ | N/S/Cl |
| 5. Sulphur | 16 | _____, ______, _______ | O/N/F |
| 6. Chlorine | 17 | _____, ______, ______ | I/O/S |
Chlorine in the Periodic Table is surrounded by the elements with atomic number 9, 16, 18 and 35.
Which of these have Physical and Chemical properties resembling chlorine?
