Question

Name the following

1.Vertical arrangement of elements in the periodic table-
2.Molecules of elements which have more than three atoms –
3.Particles present outside the nucleus –
4.The lightest sub-atomic particle –
5.Collective name for protons and neutrons –
6.Elements exhibiting more than one valency –​

Answer 1

Answer:

1. GROUps

2. poly nuclear molecules

3. electron

4. electron

5. nucleons

6.collective valency I.g. copper,tin and mercury

Answer 2

Answer:

1. such that all its elements have the same number of valence electrons. All elements within a certain group thus share similar properties.

2. are called poly-nuclear molecules.

3. protons, electrons, and neutrons

4. Electrons – The lightest subatomic particle is the electron at 9.11×1031 kg.

5. "Nucleon" is the collective name for neutrons and protons. They are the particles that make up the atomic nucleus.

6. Certain elements have more than one valency. They exhibit variable valency. For example, copper, tin, iron and mercury exhibit variable valency.

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