If the atom is neutral then, the total number of electrons is the same as the number of protons. We calculate for the total number of electrons given the compressed electron configuration,
number of electrons of Xenon (Xe) = 54
The total number of electrons after Xenon,
= 2 + 14 + 7 = 23
Adding up all the number of electrons, we have,
total number of electrons = 54 + 23 = 77
The identity of this element is Iridium (Ir). This element belongs to the class of Group 9. This is the transition metal.
Pole
Explanation:
A magnetic pole is the point on a magnet where a magnet effect is strongest. Around a magnet, there are magnetic fields.
- The magnetic fields are force fields that leaves the north poles and enters through the south.
- The pole is where magnetic effects are the strongest.
- It is around the pole that the strongest magnetic effect on a magnet or magnetic material is felt.
- The strength of magnetic fields are strongest at the poles.
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A theory is only accepted if it can't be disproven. A theory uses science, which is experimental data transformed into reality. A theory is more than an idea. It uses proven laws of physics and accepted standards.
Answer:
The release of energy from fuels is used to make other forms of
energy. When gasoline burns in a car engine, some of the
chemical energy in the gasoline is converted into heat. The heat
is converted into mechanical energy. The mechanical energy
moves the car .
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Answer:
Filling in the blank, this is an example of <u>chemical weathering</u> which happens <u>to rocks</u> overtime.
Explanation:
Chemical weathering occurs when rocks are disintegrated by chemicals.
Rain water becomes acid rain when it reacts with carbon dioxide in the atmosphere (to form carbonic acid, HCO3).
When acidic rainwater falls and stays on rocks, chemical reactions take place with the minerals present in the rock, causing the rock to weather.
Areas with immense carbon dioxide and sulphur dioxide pollution increases rain water acidity, which in turn causes moisture in the atmosphere to dissolve these gases and produce acid rain.