Subatomic Particles Isotopes And Mass Spectrometry

State the number of protons, neutrons and electrons in a ⁵⁶₂₆Fe³⁺ ion.

Which statement correctly describes the properties of two isotopes of the same element?

A mass spectrum of element Y shows two peaks: m/z = 24 at 78.6% abundance, m/z = 26 at 21.4% abundance. Calculate the relative atomic mass of Y.

A ⁶⁴Zn²⁺ ion is detected in a mass spectrometer. At what m/z value does this ion appear?

Which stage of the mass spectrometer ensures that ions of the same charge are given the same kinetic energy before entering the magnetic field?

The relative atomic mass of boron is 10.8. Boron has two isotopes, ¹⁰B and ¹¹B. What is the percentage abundance of ¹¹B?

A mass spectrum of a pure sample shows a molecular ion peak at m/z = 44 and no other peaks above m/z = 28. Which molecule is most likely responsible?

In the mass spectrum of Cl₂, the peak at m/z = 72 is taller than would be expected from the abundance product alone. Why?

Bromine has two isotopes, ⁷⁹Br and ⁸¹Br, each at 50% abundance. Predict the m/z values and relative peak heights of the molecular ion peaks in the mass spectrum of Br₂.

A student investigating an unknown metal records a mass spectrum showing peaks at m/z = 24 (79.0%), m/z = 25 (10.0%) and m/z = 26 (11.0%). Calculate the relative atomic mass of the element.

Which of the following best explains why mass spectrometers operate under vacuum conditions?

An astronomer studying spectra from a distant star detects a sample containing 95% ¹⁶O and 5% ¹⁸O. Predict the peak height ratio for the molecular ion peaks of O₂ from this sample.

Two atoms have the notations ⁴⁰₁₈Ar and ⁴⁰₂₀Ca. Which statement is correct?

In the mass spectrum of an element, a peak appears at m/z = 27.5 with significant intensity. Which interpretation is most likely?

Which of the following correctly compares the deflection of two ions of equal charge in a mass spectrometer?