Question

Give one word for the following:
1. The noble gas which has only two electrons in its valence shell.
2. The chemical name of the compound ZnCl2.
3. The central core of an atom.
4. A negatively charged particle in an atom with negligible mass.
5. The smallest unit of a pure substance which always exists independently and can retain all the
chemical and physical properties of that substance.
6. The symbol of the Hydrochloric acid gas.
7. An electrically neutral particle found within the nucleus of an atom, such that its mass is equal to
1 amu.
8. The number of atoms which constitute one molecule ofan element.
9. A group of non-metals possessing positive or negative charge.
10. An example oftriatomic molecule.
Answer:​

Answer 1

Explanation:

1) Helium

2) zinc chloride

3) nucleus

6) Hydrochloric acid

10) O3