Any atom that emits an alpha particle or a beta particlea. always becomes an atom of a different element.b. may become an atom of a different element.c. becomes a different isotope of the same element.d. increases its mass.e. becomes highly reactive.

Which of the following changes occur within a nucleus when it emits an alpha particle?Its mass number increases by 4 and its atomic number increases by 2Its mass number decreases by 2 and its atomic number decreases by 2Its mass number decreases by 4 and its atomic number decreases by 2Its mass number increases by 2 and its atomic number increases by 22Which of the following changes occurs within a nucleus when it emits a beta (minus) particle?Its mass number stays the same and its atomic number decreases by 1Its atomic number stays the same and its mass number decreases by 1Its mass number stays the same and its atomic number increases by 1Its atomic number stays the same and its mass number increases by 13Which of the following things will NOT occur when a nucleus undergoes gamma decay?The nucleus will move to a lower-energy stateThe atomic number of the nucleus won’t changeA short-wavelength, high-frequency electromagnetic wave will be emitted from the nucleusThe mass number of the nucleus will decrease4Polonium-194 is formed by the alpha decay of radon-198.  There are 84 protons in the nucleus of a polonium-194 atom.  Calculate the number of neutrons in the nucleus of an atom of radon-198.84112110865Which type(s) of nuclear radiation will be stopped by a sheet of aluminium?Alpha particles, beta particles and gamma raysBeta particles onlyAlpha particles onlyAlpha particles and beta particles6Which of the following changes occurs within a nucleus when it emits a neutron?Its atomic number stays the same and its mass number decreases by 1Its mass number stays the same and its atomic number increases by 1Its mass number stays the same and its atomic number decreases by 1Its atomic number stays the same and its mass number increases by 1

What will be the change in atomic number and atomic mass of an element 𝑋𝑧𝐴, when two alpha particles are emitted from its nucleus?

Two atoms are isotopes if they havea) different atomic numbers.b) the same mass number, but different atomic numbers.c) the same number of protons and neutrons.d) the same number of electrons, but a different number of neutrons.e) the same atomic number, but a different mass number.

A radioactive element...A...has an unstable nucleus that will become stable if the element reacts with another element to form a compound.B...has an unstable nucleus that will become stable if more electrons are lost.C...has an unstable nucleus that will become stable if more electrons are added.D...has an unstable nucleus that will decay to produce a different element.

Which statement is true?Isotopes of a given element have very similar chemical properties.Isotopes are atoms of different elements which have the same mass.Isotopes of a given element have equal numbers of neutrons.Isotopes are atoms that have gained or lost electrons.Isotopes of a given element have equal numbers of protons and neutrons.