Advertisements
Advertisements
प्रश्न
The similarities in the properties of a group of elements are because they have the same ______.
पर्याय
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
Define the term : Atomic size
The atomic radii of three elements X, Y and Z of a period of the periodic table are 186 pm; 104 pm and 143 pm respectively. Giving a reason, arrange these elements in the increasing order of atomic numbers in the period.
Which one of the following does not increase while moving down the group of the periodic table?
An element X belong to 3rd periods and group II of the periodic table state:
the number of valence electrons,
Give the number of the group and the period of elements having three shells with three electrons in valence shell.
Arrange the following as per instruction given in the bracket.
K, Pb, Ca, Zn (increasing reactivity)
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 |
Which is larger in size (i) D or E (ii) B or C
An element A has 2 electrons in its fourth shell. State:
is it a metal or non-metal
(a) Fill in the blanks and rewrite the completed statements:
(i) ________ group in the periodic table contains elements that are all gases at room temperature.
(ii) Very fine particles mainly scatter ______ light.
The electronic configuration of an element is 2, 8, 4. State it:
group and period in the Modern Periodic Table.
