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GRADE 9-Science Chapter 08-Structure of atoms-Read the questions and click on the correct option from those given below.

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Structure of atoms-Read the questions and click on the correct option from those given below.

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GRADE 9-Science Chapter 08-Structure of atoms-Read the questions and click on the correct option from those given below.
 

GRADE 9-Science Chapter 08-Structure of atoms-Read the questions and click on the correct option from those given below.Online version

Structure of atoms-Read the questions and click on the correct option from those given below.

by ODiSI Admin
1

The mass of an electron is about __________ times the mass of a hydrogen atom.

2

The mass of a proton and a neutron is approximately __________ unit(s) each.

3

The shells of an atom are designated as ___, ___, ___, ___, and so on.

4

Valency refers to the __________ of an atom.

5

The atomic number of an element is the same as the number of __________ in its nucleus.

6

Isotopes are atoms of the same element that have __________ mass numbers.

7

Isobars are atoms that have the same __________ but different atomic numbers.

8

Elements are defined by the number of __________ they possess.

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