Answer:- .
Explanation:- Atomic number for fluorine(F) is 9 and it's electron configuration is . is formed when F loses one electron from it's valence shell.
Second shell is the valence shell for fluorine and so it loses one electron from 2p to form and the electron configuration of the ion becomes .
Answer:
Gas X
Explanation:
The given reaction can be written in the form of chemical equation as shown below as:
According to law of conservation of mass, the moles of each substance in the reaction must be equal on both reactant and product side.
Also, the question asks for the gas which is diatomic. cannot be diatomic as the formula contains 3 atoms.
Between gas X and gas Y , <u>X has to be diatomic for the reaction to balance </u>as:
C. a change of state. It can be a physical or a chemical state of change.
Friction is the force that slows down a ball, if their were no friction, it would not stop.
Answer: friction