To which group and period respectively does an element wi...
To which group and period respectively does an element with 15 electrons belong?
3 and 3
3 and 5
5 and 3
5 and 5
Correct answer is C
(P) Arsenic is the element with 15 electrons which is found in Group 5 and Period 3
In the diagram above, the gas produced is? ...
Which of the following substances can be classified as heavy chemicals? ...
Which method is NOT used to determine rate of a reaction? ...
The minimum amount of energy required for a reaction to take place is ...
Which of the following statements best explains cracking ? It is a process ...
Electronic configuration of an element 13 in the subsidiary energy level is ...
Which of the following pairs of elements has the greatest difference in electronegativity? ...
When heat is absorbed during a chemical reaction, the reaction is said to be ...