Which statements about subatomic particles is false?
Protons and neutrons have charges of the same magnitude, but opposite sign. This is also false because neutrons have no charge, so it’s impossible for protons and neutrons to have the same charge.
Which of the following statements is true about subatomic particles?
The true statement about subatomic particles is A) A neutral atom contains the same number of protons and electrons.
What are the 4 subatomic particles?
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|Proton||p||inside the nucleus|
|Neutron||n||inside the nucleus|
|Electron||e-||outside the nucleus|
What are the three subatomic particles?
There are three subatomic particles: protons, neutrons and electrons. Two of the subatomic particles have electrical charges: protons have a positive charge while electrons have a negative charge. Neutrons, on the other hand, don’t have a charge.
What subatomic particles are responsible for the mass of an atom?
The majority of an atoms’ mass comes from the protons and neutrons that make up its nucleus. Electrons are the least massive of an atom’s constituent particles, with a mass of 9.11 x 10-31 kg and a size too small to be measured by current techniques.
Does fluorine have 9 protons?
For example, a fluorine atom has 9 protons and 10 neutrons. Its atomic number is 9, while its atomic mass is 19 atomic mass units. So we can say that its atomic weight is 19, or its mass number is 19.
Which of the following are subatomic particles?
Particles that are smaller than the atom are called subatomic particles. The three main subatomic particles that form an atom are protons, neutrons, and electrons. The center of the atom is called the nucleus.
Which statement best describes the location of subatomic particles?
Which statement best describes the location of subatomic particles? The protons and electrons are in the nucleus, while the neutrons are in the cloud outside the nucleus.
What subatomic particle identifies the atom?
The proton identifies an atom as that of a particular element. The atomic number is equal to the number of protons in the nucleus of an atom.
Are there more subatomic particles?
More than 200 subatomic particles have been detected—most of them highly unstable, existing for less than a millionth of a second—as a result of collisions produced in cosmic ray reactions or particle accelerator experiments.
How do we know about subatomic particles?
Subatomic particles include electrons, the negatively charged, almost massless particles that nevertheless account for most of the size of the atom, and they include the heavier building blocks of the small but very dense nucleus of the atom, the positively charged protons and the electrically neutral neutrons.
Which subatomic particles contribute the least to the mass of an atom?
what subatomic particle contributes least to the atom’s mass? Electrons contribute least to an atom’s mass.