Atomic Weight

IMPORTANT

Atomic Weight: Overview

This topic covers concepts such as Atomic Mass, Dalton's Contribution to Atomic Mass, Need of Relative Atomic Masses, Atomic Mass Unit, Atomic Masses of Some Elements, Oxygen as Standard for Relative Atomic Masses, etc.

Important Questions on Atomic Weight

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Chemistry>Atoms and Molecules>Atomic Weight> Q 1

Which of the following is the SI unit of atomic mass unit?

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Chemistry>Atoms and Molecules>Atomic Weight> Q 2

Which of the following is taken as a reference to compare the atomic mass of element?

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Chemistry>Atoms and Molecules>Atomic Weight> Q 3

The name of element chosen as the standard reference for measuring atomic masses is

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Chemistry>Atoms and Molecules>Atomic Weight> Q 4

Which of the following represents 1 amu? 

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Chemistry>Atoms and Molecules>Atomic Weight> Q 5

How many times is the atom of oxygen heavier than an atom of carbon?

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Chemistry>Atoms and Molecules>Atomic Weight> Q 6

Select the reference used at present for describing the relative atomic mass.

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Chemistry>Atoms and Molecules>Atomic Weight> Q 7

The ratio of the average mass of one atom of an element to one-twelfth of the mass of an atom of carbon-12 isotope, is called

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Chemistry>Atoms and Molecules>Atomic Weight> Q 8

3.011×1022 atoms of an element weigh 1.15 gm. The atomic mass of the element is

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Chemistry>Atoms and Molecules>Atomic Weight> Q 9

Helium atom has an atomic mass of 4 u and two protons in its nucleus. How many neutrons does it have?

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Chemistry>Atoms and Molecules>Atomic Weight> Q 10

Define the atomic mass unit.

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Chemistry>Atoms and Molecules>Atomic Weight> Q 11

Atomic mass of chlorine atom is:

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Chemistry>Atoms and Molecules>Atomic Weight> Q 12

Which of the following was accepted as the standard reference for measuring atomic masses?

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Chemistry>Atoms and Molecules>Atomic Weight> Q 13

Atomic mass of oxygen atom is?

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Chemistry>Atoms and Molecules>Atomic Weight> Q 14

Atomic mass unit is abbreviated as?

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Chemistry>Atoms and Molecules>Atomic Weight> Q 15

On amu scale, atomic weight of Ca is 40. If one u is redefined, which of the following would be correct?

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Chemistry>Atoms and Molecules>Atomic Weight> Q 16

The value of amu is which of the following?