2 years ago

Why is it difficult to detect the presence of isotopes of an element during chemical studies?

1 answer:

7 0

Answer:

Isotopes are atoms that have different number of neutrons, so they have a different mass number than the other atoms in an element.

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What is the wavelength (in nm) of the least energetic spectral line in the visible series of the H atom?

grin007 [14]

Answer:

Brackett Series (n = 4)

Explanation:

The least energetic line of Hydrogen atom lies in <em>Brackett Series </em>when n = 4 because these are least energetic, have longer wavelengths and lies in Infrared region of spectrum. No traces of <em>Pfund series </em>are formed by H=atoms.

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Which of the following temperature scales contains an absolute zero? Fahrenheit (°F) Celsius (°C) Kelvin (K)

melamori03 [73]

Kelvin (K) is the only scale that has a numeral value assigned to absolute zero.

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Vlad1618 [11]

A should be the correct answer because any argument based on science makes a result more logical.

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Kruka [31]

Because they can't get trapped in.

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What is the energy of a photon of infrared radiation with a frequency of 2.53 × 1012 Hz? Planck’s constant is

Novosadov [1.4K]

It is letter b or c nit d

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1 year ago