Give reason:
- Atoms are electrically neutral.
- Argon atom exist freely in nature.
- Potassium is more reactive than calcium.
- Elements of VIII A are called noble gas, Why?
- Chlorine is more reactive than nitrogen, Why?
1 Answer
Atoms are electrically neutral: In normal condition, Atoms have equal number of positively charged particles (protons) and negatively charged particles (electrons). There equal and opposite charges cancel each other. So, Atoms are electrically neutral.
Argon atom exist freely in nature: The outermost orbit of argon atom consists of eight electrons on the valance shell. Due to this, it does not take part in chemical reaction. Therefore, argon atom exists freely in nature.
Potassium is more reactive than calcium: Potassium is more reactive than calcium because potassium (K) has larger size and less nuclear power. As a result, Potassium loses electron easily than calcium (Ca).
Elements of group VIII A are called noble gas, Why?: Elements of group VIII A are called noble gas because they have fulfilled electronic configuration in their outermost shell and do not take part in chemical reaction.
Chlorine is more reactive than nitrogen, Why?: Nitrogen and chlorine both are non metal. Here, Nitrogen needs 3 electrons to be in stable condition but chlorine needs one electron. So, chlorine gains one electron easily than that of nitrogen.
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