the table shows the number of charged subatomic particles in an ion.
charged particles
charge on particle number of particles
positive 2
negative 3
a negatively charged substance is brought near the ion. what will most likely happen and why? (5 points)
the ion will attract the substance because it has more electrons than protons.
the ion will attract the substance because it has more protons than electrons.
the ion will repel the substance because it has more electrons than protons.
the ion will repel the substance because it has more protons than electrons.

The ion will repel the substance because it has more protons than electrons.

Explanation:

Option (c) is the correct answer.

Explanation:

It is known that sub-atomic particles present in an atom are protons, neutrons and electrons.

It is given that there are 2 positive sub-atomic particles present in the given atom. This means there are 2 protons.

And, it is give that there are 3 negative sub-atomic particles. This means that there are 3 electrons.

Also, when an atom is neutral then there are same number of protons and electrons.

This also shows that the given ion contains a negative charge. As like charges repel each other so, when a negatively charged substance is brought near the ion then there will occur repulsion between them.

Thus, we can conclude that the ion will repel the substance because it has more electrons than protons.

answer: -

reaction:

na + cl ⇌ nacl

balanced chemical equation:

na + 2cl ⇌ nacl2

sodium + clorine goes to form sodium chloride (table salt).

the product is nacl2.

and the reactants are na and cl.

(note: if you don’t know what ⇌ means, read below: -

⇌(double head arrow) means reversible reaction).

most historians agree that gabriel mouton, the vicar of st. paul’s church in lyons, france, is the “founding father” of the metric system. he proposed a decimal system of measurement in 1670. mouton based it on the length of one minute of arc of a great circle of the earth (now called a nautical mile, 1852 meters). he also proposed the swing-length of a pendulum with a frequency of one beat per second as the unit of length (about 25 cm). a pendulum beating with this length would have been fairly easy to produce, thus facilitating the widespread distribution of uniform standards. over the years, his work was revised, improved, and extended by a number of french scientists.

the political sponsor of weights and measures reform in the french revolutionary national assembly was the bishop of autun, better known as talleyrand. under his auspices, the french academy appointed several committees to carry out the work of developing a usable system of weights and measures for france. one of the committees recommended a decimalized measurement system based upon a length equal to one ten-millionth of the length of a quadrant of the earth’s meridian (i.e., one ten-millionth of the distance between the equator and the north pole).