krypton
it is neutral because there are the same numbers of protons and electrons in an atom so the positive charge of the proton balances out the negative charge of an electron
As the tern neutral might imply, the overall charge of a neutral atomis zero.
neutrons
1
The nucleus of the atom has a positive charge because the protons that found in the nucleus are positive and the neutrons have no charge. The electrons on the electron cloud have a negative charge. This means the entire atom has a neutral charge to it. The atom always has the same number of protons and electrons, which means they cancel their charges out.
A rubidium atom is larger than a neutral atom because, when it loses an electron to become an ion, it loses an electron from the outermost shell, increasing the effective nuclear charge which attracts the remaining electrons closer to the nucleus, reducing the size of the ion compared to the atom.
Atoms are isoelectronic when they have the same electron configuration. Therefore, an anion isoelectronic to krypton is bromide. A cation isoelectronic to krypton is rubidium.
Neon is isoelectronic with the sodium ion.
Not a neutral Cl atom but the chloride ion Cl- is isoelectronic with the noble gas argon.
Nothing's wrong, except that it means elements X and Y are in fact the same element, if their atoms have the same number of electrons. --------- A more clear, correct and short answer: a neutral atom of an element can be isoelectronic only with an ionized atom of another element.
1: RbCl (Rubidium has 1+ charge, and Chlorine has 1-)
Yes, Cs+ and Xe are isoelectronic because they both have the same number of electrons (54) despite Cs+ having a +1 charge and Xe being neutral. Their electron configurations are identical due to this same electron count.
The noble gas neon (Ne), is isoelectronic with N3- ion (not N atom)
There are 37 protons in one atom of rubidium-85.
Nitrogen, oxygen, and fluorine are isoelectronic with carbon because they all have the same number of electrons (6) in their neutral state.
The isoelectronic of iodide (I-) is xenon (Xe), because both species have the same number of electrons.
Rubidium: Rb, atom number 37, mass 85.47 a.m.u