Atoms of different elements having ______ mass numbers, but ______ atomic numbers are called isobars.

Fill in the Blanks

Atoms of different elements having the Same mass numbers, but different atomic numbers are called isobars.

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Chapter 7: Atoms and Molecules - Evaluation [Page 103]

Chapter 7 Atoms and Molecules
Evaluation | Q II. 1. | Page 103

Fill in the blank:

Atoms are _____

Define: Mass number

A certain particle ‘X’ has 17 protons, 18 electrons and 20 neutrons.

What is the atomic numebr of X ?

What are the building blocks of matter ?

Write the relation between nanometre and metre.

Which has more atoms, 50 g of aluminium or 50 g of iron ? Illustrate your answer with the help of calculations.

(Atomic masses : Al = 27 u ; Fe = 25 u)

Draw the diagrams representing the atomic structures of the following: Neon

An atom of an element has no electron. Will that atom have any mass or not? Can an atom exist without electron? If so then give example.

You are provided with a fine white coloured powder which is either sugar or salt. How would you identify it without tasting?

What is the fundamental particle of an element?

Atoms of different elements having mass numbers, but atomic numbers are called isobars.