Elements of groups 3 to 12 are called________.
Transition element :
Therefore, Elements of groups 3 to 12 are called Transition elements.
Fill in the following blanks with suitable words :
(a) The basis for the modern periodic table is ……………
(b) The horizontal rows in a periodic table are called ……………
(c) Group 1 elements are called ………………
(d) Group 17 elements are known as ……………
(e) Group 18 elements are called ……………
(f) According to Newland’s classification of elements, the properties of sulphur are similar to those of oxygen because sulphur is the …………… element starting from oxygen.
What are the Group A elements called?
Elements with a valency equal to 3 are called ___________
1. What is the name given to group 17 elements? Why are they called so?
2. Comment on the-
(a) Reactivity
(b) Colour
(c) Physical state of group 17 elements.
A group of three elements with similar physical and chemical properties is called ------------