I think the number of protons in the nucleus the number of valence electrons atomic mass...
Answer:
Ge: [Ar] 3d10 4s2 4p2 => 6 electrons in the outer shell
Br: [Ar] 3d10 4s2 4p5 => 7 electrons in the outer shell
Kr: [Ar] 3d10 4s2 4p6 => 8 electrons in the outer shell
Explanation:
The electron affinity or propension to attract electrons is given by the electronic configuration. Remember that the most stable configuration is that were the last shell is full, i.e. it has 8 electrons.
The closer an atom is to reach the 8 electrons in the outer shell the bigger the electron affinity.
Of the three elements, Br needs only 1 electron to have 8 electrons in the outer shell, so it has the biggest electron affinity (the least negative).
Ge: needs 2 electrons to have 8 electrons in the outer shell, so it has a smaller (more negative) electron affinity than Br.
Kr, which is a noble gas, has 8 electrons and is not willing to attract more electrons at all, the it has the lowest (more negative) electron affinity of all three to the extension that really the ion is so unstable that it does not make sense to talk about a number for the electron affinity of this atom.
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<u>Answer:</u>
<em>Substances known as </em><u>electrolytes</u><em> are found in blood which includes sodium and potassium.</em>
<u>Explanation:</u>
<em>Electrolytes are electrically charged particles</em> and they help in moving nutrients into the cell and removing waste particles out of the cell. Other <em>functions of electrolytes</em> include maintaining the salt level as well as <em>pH level of the body. </em>
The electrolyte potassium is present in <em>small quantities in the fluid part of blood, namely plasma.
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Regulating body muscle contraction is the main function of potassium. The fluid region outside cells contains a <em>major portion of sodium which maintains the water balance of the body.
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In science, we have a name for this, called Avogadro's number, and it describes the number of representative particles in one mole of a substance. The inverse mole unit tells us there are 6.022×1023 particles of something *per mole* so there are 1,023 particles
Answer:1 mole of Mg3(PO4)2 (molecule) contains 3 moles of Mg atoms, 2 moles of P atoms and 2X4 moles of O atoms. = 0.03125 moles.
Explanation: