Atomic Structure

Which pair are isotopes?

How many neutrons are in ⁶⁵₃₀Zn²⁺?

Which beam is deflected most in the same electric field?

What is the electronic configuration of Cu²⁺?

Which element has a first ionisation energy lower than that of the element before it in the period?

Write the full electronic configurations of these atoms.

Which statement about electrons, neutrons and protons is correct?

A particle, with a +4 charge, contains 48 particles in its nucleus and 18 electrons. What are the numbers of neutrons and protons found in its nucleus? Each option gives the neutrons, then the protons.

The nucleus of M³⁺ contains a total of 27 particles. 13 of the particles have a charge. Which statement about the ion is correct?

The atomic number of cerium, Ce, is 58. A Ce⁴⁺ ion has 140 nucleons. How many neutrons and electrons are there in one Ce⁴⁺ ion? Each option gives the neutrons, then the electrons.

Magnesium exists in three stable isotopes, Mg-24, Mg-25 and Mg-26. Which statements are correct about the properties of the isotopes?

1 The isotopes have the same number of electrons in their outermost shells.
2 The isotopes have the same physical properties.
3 The isotopes react with hydrochloric acid in the same manner.

Which statement about isotopes is correct?

Chlorine-35 and chlorine-37 are two isotopes of chlorine. Which statements are correct?

1 They have the same atomic number.
2 They have the same mass number.
3 They have the same physical properties.
4 They have the same chemical properties.

The numbers of electrons, protons and neutrons in four different particles are shown.

Which particles are isotopes of the same element?

An element, Z, has p protons and n neutrons in its nucleus. Which row gives a possible correct number of protons, neutrons and electrons in a negative ion of an isotope of Z? Each option gives the protons, neutrons and electrons in that order.

An atom of one isotope of chlorine is represented by the symbol ³⁷Cl. Particle R has one more neutron, two more protons and one more electron than this isotope of chlorine. Which symbol represents R?

A beam of protons was passed through an electrostatic field between two charged plates. The electrostatic field deflected the beam of protons towards the negatively charged plate. The lower the relative mass of the particle, the larger the deflection. The experiment was repeated using a beam of electrons in place of the beam of protons. Which row correctly shows the extent and the direction of the deflection of the beam of electrons?

An element J has a nucleon number of 45. The ion, J³⁺, contains 18 electrons. How many neutrons are there in an atom of J?

In which species are the numbers of protons, neutrons and electrons all different?

An ion X²⁻ has m nucleons and n electrons. What does the nucleus of an atom of X contain? Each option gives the number of protons, then the number of neutrons.

Carbon has three naturally occurring isotopes, carbon-12, carbon-13 and carbon-14. Which statement about carbon-14 is incorrect?

Which species are from the same group of the Periodic Table?

1 an atom with the electronic configuration of 2.3
2 an atom with the electronic configuration of 2.8.3
3 an ion with a 3− charge and an electronic configuration of 2.8.8

The element with proton number 12 has similar chemical properties to the element with which proton number?