10. What are transition elements and inner transition elements. State the position of the inner transition elements. state why noble gases are considered unreactive elements .
Answers
Answer:
d-block elements are called as transitioncelements while f-block elements are called as inner trnsition elements.
Inner transition elements are found at the bottom of the periodic table.
Noble gases are considered unreactive gases because as their outermost shells are completely filled, they are already stable and dont require to donate or gain electrons to aquire stability. That's why they are unreactive.
Explanation:
Answer:
Explanation:
(i) Elements present in groups 3 to 12 in the middle
of the periodic table are called transition elements.
(ii) Their last two outermost shells are incomplete.
(iii) They belong to d-block of Modern Periodic table.
(iv) All these elements are solid metals at room
temperature (except Mercury and Gallium).