Answer:
the solid materials will disappear after mixing with a liquid material
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If you have 200. 0 g of radioisotope with a half-life of 5 days. 25g of isotope would remain after 15 days
Isotopes are members of an element family that have the same number of protons but differ in the number of neutrons. The atomic number of an element on the Periodic Table is determined by the number of protons in its nucleus. Carbon, for example, has six protons and has atomic number 6.
Radioisotopes are elemental radioactive isotopes. They can alternatively be defined as atoms with an unstable neutron-proton combination or surplus energy in their nucleus.
Radioisotopes are critical components of medical diagnostic techniques. They can be utilized for imaging to examine the dynamic processes taking place in various sections of the body when combined with imaging devices that register the gamma rays emitted from within.
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An example of an exothermic reaction will be formation of ice
In an ionic compound the atoms are linked via ionic bonds. These are formed by the transfer of electrons from one atom to the other. The atom that loses electrons gains a positive charge whereas the atom that accepts electrons gains a negative. This happens in accordance with the octet rule wherein each atom is surrounded by 8 electrons
In the given example:
The valence electron configuration of Iodine (I) = 5s²5p⁵
It needs only one electron to complete its octet.
In the given options:
K = 4s¹
C = 2s²2p²
Cl = 3s²3p⁵
P = 3s²3p³
Thus K can donate its valence electron to Iodine. As a result K, will gain a stable noble gas configuration of argon while iodine would gain an octet. This would also balance the charges as K⁺I⁻ creating a neutral molecule.
Ans: Potassium (K)
