Science>Chemistry>Atoms and Molecules>Atom

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The Latin name of silver is Argentum.

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Important Questions on Atoms and Molecules

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Science>Chemistry>Atoms and Molecules>Atom

The graph of

\ln (\frac{R}{R_{0}})

versus

\ln A

(

R =

radius of a nucleus and

A =

mass number) is

HARD

Science>Chemistry>Atoms and Molecules>Atom

In a Davisson-Germer experiment, Helium atoms were used in place of electrons. What should be the energy of Helium so that a strong peak of scattered He appears at an angle of

50 °,

as was the case with electrons having an energy of

54 eV ?

(Take mass of

He

atoms to be

7500

times the mass of electrons)

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Science>Chemistry>Atoms and Molecules>Atom

The atomic number of element having symbol

Unt

is

EASY

Science>Chemistry>Atoms and Molecules>Atom

The mass number and the volume of a nucleus is

M

and

V

respectively. If the mass number is increased to

2 M

then the volume is changed to

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What does a chemical symbol represent?

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Science>Chemistry>Atoms and Molecules>Atom

Which of the following is compound?

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Science>Chemistry>Atoms and Molecules>Atom

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

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Science>Chemistry>Atoms and Molecules>Atom

Atomic mass unit is abbreviated as?

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Science>Chemistry>Atoms and Molecules>Atom

Symbol of Mercury is

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Science>Chemistry>Atoms and Molecules>Atom

Write the symbol for the element :

Iron.

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Science>Chemistry>Atoms and Molecules>Atom

Name the element for the following symbol.

Na.

EASY

Science>Chemistry>Atoms and Molecules>Atom

How does a structural formula help you to understand a chemical reaction? Identify the differences between structural and chemical formulae.

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Science>Chemistry>Atoms and Molecules>Atom

Write the symbol for the element cadmium.

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Science>Chemistry>Atoms and Molecules>Atom

The mass of

1 u

is _____.

EASY

Science>Chemistry>Atoms and Molecules>Atom

Write the symbol for the element :

Calcium.

EASY

Science>Chemistry>Atoms and Molecules>Atom

Name the element for the following symbol:

Ba

.

MEDIUM

Science>Chemistry>Atoms and Molecules>Atom

Write the symbol for the element :

Gold.

MEDIUM

Science>Chemistry>Atoms and Molecules>Atom

The name of the element with the symbol $W$ .

EASY

Science>Chemistry>Atoms and Molecules>Atom

Name the element for the following symbol.

U.

EASY

Science>Chemistry>Atoms and Molecules>Atom

Name the element for the following symbol.

Al