Question # 1

M shell has sub sheels.

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1s , 2s

1s,2s,3s

2s,2p

3s,3p,3d

Atomic number is represented by

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P

A

At

Z

Number of protons in the nucleus of an atom is called.

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Atomic number

Mass Number

Mass Unit

Electron Number

Why has isotopes not been shown int he periodic table.

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Isotopes do not show periodic behavior

Periodic tble cannot accomodate a large number of isotopes of different elements

All the isotops have same atomic number so there is no need to give them separate places

Someof the isotopes are unstble and they give rise to different elements.

Rutherford used a gold foil in his experiment, which had a tickness of

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0,0002 cm

0,0001 cm

0.001 cm

0.00004cm

How is radio carbon dating useful for archeolgists.

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It helps detemine whether the matter is radioactie or not

It helps determine the age of organic matter

It helps determine the composition of matter

It helps deterime the usefulness of matter

Which particle is present in differente number in the isotopes.

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Proton

Electron

Neutron

Both neutron and electron

Atom is electrically

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Positive particle

Negaitve particle

Neutral particle

None of these

What will be the relative atomic mass of nitrogen given the abundance of its two isotopes, ¹⁴ N and ¹⁵N are 99.64 and 0.35

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14.0210

14.2100

14.0021

14.1200

Number of electrons that an be accomodated in f - subshell

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6

10

2

14

Proton are feflected toward plate.

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Positive

Negative

Both a and b

None of these

N-shell contains number of subshells.

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1

3

4

2

John Dalton put forward his atomic theory.

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1800

1803

1805

1903

How many subshells are there in M shell?

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2

4

3

5

Whcih subshells are present in L - shell?

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S and P

Only s -sub shell

Only p - sub shell

Sub shell

Chlorine has two isotopes, both of which have

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Same mass Number

Same number of electrons

Same number of neurtons

Different number of protons

Quantum means.

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Virable energy

Fixed energy

High energy

Minimum energy

How many electons can be accommodated in S subshell?

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2

6

14

10

What does keep the particles present in the nucleus intact.

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Particles are held together by dipolar force

Particles are held together by wee nuclear force

Particles are held together by strong nuclear force

Particles are held together by electrostatic force

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