Which compound contains both ionic and covalent
2 answers:
Answer: The correct answer is option (A).
Explanation:
Covalent bonds are those bonds in which sharing of an electrons is present in between the two atoms. Generally this type of bonding is found when electro-negativity difference between is very less or zero.
Ionic bonds are those bonds in which complete transfer of an electrons from one atom to another atom is present.Generally this type of bonding is found when electro-negativity difference between two atoms is very large.
Compound contains both ionic and covalent bonds.
- Bond between carbon and oxygen atoms in carbonate ion is a covalent bond. Being a ploy-atomic ion it carries 2- charge.
- Calcium ion being 2+ charge will form ionic bond with carbonate ion.
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Answer: A. Acids have a slippery feel.
Explanation:
Acid : It is a substance that has ability of donating proton or hydrogen ion, .
The properties of an acid are :
Acids are sour in taste.
The texture of an acid solution is sticky.
It changes the color of the litmus paper to red.
It react with a metal to give compound and hydrogen gas.
Base : It is a substance that has ability of donating hydroxide ion, .
The properties of an base are :
Base are bitter in taste.
The texture of a base solution is slippery.
It changes the color of the litmus paper to blue.
It does not react with a metal.
Thus bases have slippery nature and not acids.