Question

select the statement that accurately explains why an atom is left with a positive charge when it loses electrons.
the atom gains another neutrally charged subatomic particle when it loses an electron.
there are more negatively charged particles in the atoms nucleus
the atom gains another positively charged subatomic particle when it loses an electron.
there are more positively charged subatomic particles in the atoms nucleus than electrons in the atom.
which bohr diagram represents the electron arrangement for a magnesium atom?
2 electrons in the first level, 4 electrons in the second level, 6 electrons in the third level
1 electron in the first level, 1 electron in the second level, 10 electrons in the third level
2 electrons in the first level, 8 electrons in the second level, 2 electrons in the third level
2 electrons in the first level, 6 electrons in the second level, 4 electrons in the third level

Explanation:

1. An atom is neutral when the number of protons (positively - charged subatomic particles in the nucleus) equals the number of electrons. When it loses electrons, there are more protons than electrons, resulting in a positive charge. So, the correct reason for an atom having a positive charge when it loses electrons is that there are more positively - charged subatomic particles in the atom's nucleus than electrons in the atom.
2. Magnesium has an atomic number of 12. The first energy level can hold 2 electrons, the second can hold 8 electrons, and the remaining 2 electrons go in the third energy level. So the electron arrangement for a magnesium atom is 2 electrons in the first level, 8 electrons in the second level, 2 electrons in the third level.

Answer:

1. There are more positively charged subatomic particles in the atom's nucleus than electrons in the atom.
2. 2 electrons in the first level, 8 electrons in the second level, 2 electrons in the third level