Advertisements
Advertisements
प्रश्न
The electronic configuration of an element T is 2, 8, 8, 1.
What is the group number of T?
उत्तर
Group 1 since the valence electron is 1.
संबंधित प्रश्न
Name two elements you would expect to show chemical reactions similar to magnesium. What is the basis for your choice?
The position of three elements A, B and C in the Periodic Table are shown below –
|
Group 16
|
Group 17
|
|
−
|
−
|
|
−
|
A
|
|
−
|
−
|
|
B
|
C
|
(a) State whether A is a metal or non-metal.
(b) State whether C is more reactive or less reactive than A.
(c) Will C be larger or smaller in size than B?
(d) Which type of ion, cation or anion, will be formed by element A?
The three elements having chemical symbols of Si, B and Ge are:
(a) all metals
(b) all non-metals
(c) all metalloids
(d) Si is metalloid, B is metal and Ge is non-metal
Consider the following elements:
Ca, Cl, Na, I, Li, Ba, Sr, K, Br
Separate these elements into three groups (families) of similar properties. State one property in each case on the basis of which you have made your choice.
Name two elements in halogens.
Give the symbol and valency of the following element and radical.
Bicarbonate
Which of the following elements does not lose an electron easily?
Group 16 elements are collectively called as ______.
Name two elements that you would expect to show chemical reactions similar to calcium. What is the basis of your choice?
An element has 2 electrons in its N shell.
Is it a metal or a non-metal?
