Advertisements
Advertisements
प्रश्न
Name or state following with reference to the elements of the first three periods of the periodic table.
The number of electron shells in elements of period 1, period 2, and period 3.
Advertisements
उत्तर
In period 1 the number of electron shells is [1] In period 2 is [2], in period 3 is [3]
APPEARS IN
संबंधित प्रश्न
An element X belong to 4th period and 17th group, state.
name of the element.
State the number of elements in period 1, period 2 and period 3 of the periodic table.
The following table represents the first period of the modern periodic table. Study the table and answer the questions that follow:
- Write the formula of the sulphate of the element with atomic number 13.
- What type of bonding will be present in the oxide of the element with atomic number 1?
- Which feature of the atomic structure accounts for the similarities in the chemical properties of the elements in group VIIA of the periodic table?
- Name the element which has the highest ionization potential.
- How many electrons are present in the valence shell of the element with atomic number 18?
- What is the name given to the energy released, when an atom in its isolated gaseous state accepts an electron to form an anion?
- What is the electronic configuration of the element in the third period which gains one electron to become an anion?
- Fill in the blanks:
The atomic size ______ as we move from left to right across the period, because the ______ increases, but the ______ remains the same.
Choose the correct answer from the choice given:
An element A belonging to Period 3 and Group II will have
The position of elements A, B, C, D and E in the periodic table are shown below:
|
Group 1 |
Group 2 |
Group 17 |
Group 18 |
|
|
|
|
D |
|
|
B |
C |
|
|
A |
|
|
E |
State which is metals, non-metals, and noble gas in this table.
What is the common feature of the electronic configuration of the elements at the end of Period 2 and Period 3?
State the property trends in general of elements on moving down in a group of the periodic table.
Select the correct answer from the options given below.
It is a metal in period 2 having electronic configuration 2, 1?
Electron Affinity is maximum in ______.
Which of the following would weigh the least?
(Atomic masses C = 12, 0 = 16, Na = 23)
