Advertisements
Advertisements
प्रश्न
State the property trends in general of elements on moving down in a group of the periodic table.
Advertisements
उत्तर
Trends in a group:
- Number of shells and valence electrons: As we move down in a group the number of shells increase and valence electrons in a group remains the same.
- Valency: Valency of all elements is the same.
- Properties of elements:
(a) Metallic character increases,
(b) Non-metallic character decreases - Atomic size increases.
`"F>Cl>Br>I"/"Reactivity decreases"`
APPEARS IN
संबंधित प्रश्न
List any two properties of the elements belonging to the first group of the modern periodic table.
Which element has a total of three shells, with four electrons in its valence shell?
The atomic number of an element is 20. In modern periodic table, this element is placed:
(a) 2nd period
(b) 4th period
(c) 3rd period
(d) 1st period
How many groups and periods are there in the modern periodic table?
Select the correct answer
Number of shells in potassium are
Name the elements in period 1.
Choose the most appropriate answer from the following list of oxides which fit the description.
An amphoteric oxide.
Atomic numbers of elements A, B, C, D, E, F are 8, 7, 11, 12, 13 and 9 respectively. State the type of ions they form.
Formula of ion of A is A2+. Element A probably belongs to ______ group.
