Element Z3+ contains 31 protons. What is the identity, and how many electrons does Z3+ have.
To determine the identity of an element with 31 protons, we can refer to the periodic table. Element number 31 on the periodic table is Gallium (Ga).
Now, when an element is in the form of Z3+, it means it has a charge of +3. This indicates that it has lost 3 electrons.
Since neutral Gallium (Ga) has 31 electrons to balance its 31 protons, the Z3+ ion (Gallium with a +3 charge) will have 3 fewer electrons, so it will have 28 electrons.
To determine the identity of an element, we need to consult the periodic table. The periodic table organizes elements based on their atomic number, which corresponds to the number of protons in the nucleus of an atom.
Element Z3+ has 31 protons, meaning it has an atomic number of 31. By referring to the periodic table, we can find that the element with atomic number 31 is gallium (Ga).
Now, let's consider the Z3+ charge. The superscript + indicates that the ion has a positive charge. A positive charge implies that the atom has lost electrons. To determine the number of electrons in the Z3+ ion, we need to find the difference between the number of protons and the ion charge.
In this case, Z3+ has 31 protons and a +3 charge. So, we subtract 3 from 31 to get 28 electrons. Therefore, the Z3+ ion of gallium (Ga) has 28 electrons.
Look on the periodic table for element #31. The number of protons is 31. If it were neutral it would have 31 electrons; since it has a +3 charge it must have 3 fewer electrons.
Ga
28