Chemistry Crash Course NEET>Chapter 2 - Structure of Atom>Level 1>Q 4

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Which one among the following most correctly determines the atomic number of an element?

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Important Questions on Structure of Atom

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Chemistry Crash Course NEET>Chapter 2 - Structure of Atom>Level 1>Q 5

The mass number of an atom is determined by _____.

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Chemistry Crash Course NEET>Chapter 2 - Structure of Atom>Level 1>Q 6

Which of the following pairs represents isoelectronic ions?

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Chemistry Crash Course NEET>Chapter 2 - Structure of Atom>Level 1>Q 7

The isoelectronic pair is:

MEDIUM

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Chemistry Crash Course NEET>Chapter 2 - Structure of Atom>Level 1>Q 8

The ratio of the

(e / m)

(specific charge) values of an electron and an

α -

particle is -

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Chemistry Crash Course NEET>Chapter 2 - Structure of Atom>Level 1>Q 9

For a one-electron atom, the set of allowed quantum numbers is:

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Chemistry Crash Course NEET>Chapter 2 - Structure of Atom>Level 1>Q 10

The pair of atoms having the same number of neutrons is

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Chemistry Crash Course NEET>Chapter 2 - Structure of Atom>Level 1>Q 11

The radii of the first Bohr orbit of

H (r_{H}), {He}^{+} ({r_{He}}^{+})

and

{Li}^{2 +} ({r_{Li}}^{2 +})

are in the order

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Chemistry Crash Course NEET>Chapter 2 - Structure of Atom>Level 1>Q 12

The graph that depicts Einstein's photoelectric effect for a monochromatic source of frequency above the threshold frequency is