Alpha Question Bank for Engineering: Chemistry>Chapter 2 - Structure of Atom>Exercise-4>Q 123

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Earn 100

Many elements have non-integral atomic masses because:

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Important Questions on Structure of Atom

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Alpha Question Bank for Engineering: Chemistry>Chapter 2 - Structure of Atom>Exercise-4>Q 124

Which of the following statement(s) are wrong?

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Alpha Question Bank for Engineering: Chemistry>Chapter 2 - Structure of Atom>Exercise-4>Q 125

In a hydrogen-like sample, two different types of photons

A

and

B

are produced by electronic transition. photons

B

has its wavelength in the infrared region. If photon A has more energy than

B

, then photon

A

may belong to the region:

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Alpha Question Bank for Engineering: Chemistry>Chapter 2 - Structure of Atom>Exercise-4>Q 126

Identify the correct statement(s):

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Alpha Question Bank for Engineering: Chemistry>Chapter 2 - Structure of Atom>Exercise-4>Q 127

d_{z^{2}}

... orbital has:

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Alpha Question Bank for Engineering: Chemistry>Chapter 2 - Structure of Atom>Exercise-4>Q 128

If

m_{p}

is the mass of proton.

m_{a}

that of a neutron,

M_{1}

that of

{}_{10}{Ne}^{20}

nucleus and

M_{2}

that of

{}_{20}{Ca}^{40}

nucleus, then which of the following relations is/are true?

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Alpha Question Bank for Engineering: Chemistry>Chapter 2 - Structure of Atom>Exercise-4>Q 129

In a given energy level, the order of penetration effect of different orbitals is:

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Alpha Question Bank for Engineering: Chemistry>Chapter 2 - Structure of Atom>Exercise-4>Q 130

The ion which has

18

electrons in the outermost shell is

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Alpha Question Bank for Engineering: Chemistry>Chapter 2 - Structure of Atom>Exercise-4>Q 131

Which of the following salts are composed of isoelectronic cation and anion?

$(I) NaCl$

$(II) {BaCl}_{2}$

$(III) {MgF}_{2}$

$(IV) CaS$