Chemistry
How many electrons are present in the valence shell of the element, with atomic number 18?
- 7
- 0
- 8
- 4
Related Questions
A reactive metal (P) is treated with H2SO4 (dil). The gas is evolved and is collected over water. Which of the following conclusion is correct
P. The gas is hydrogen
Q. The gas is lighter than air
- Only P
- Only Q
- Both P and Q
- Neither P nor Q
In which of the following solution, Zn can displace metal from the solution?
- P
- Q
- R
- S
The table given below gives information about six elements.
Electronic Configuration Formula of
CompoundW A: 2, 1 B: 2, 6 A2B X B: 2, 6 C: 2, 7 B2C Y C: 2, 7 D: 2, 8, 3 DC3 Z E: 2, 8, 6 F: 2, 8, 8, 2 FE Identify the compound which is wrongly formed.
- Z
- Y
- X
- W
The substance that acts as a weak electrolyte is
- NaOH
- HNO3
- H3PO4
- HBr