- Can we see electron?
- Who named Neutron?
- What family is silver in?
- Where was silver found?
- Where is the atomic mass?
- What contributes the most to the mass of an atom?
- How do you determine which isotope is most abundant?
- What part of an atom has the largest mass?
- Do electrons actually exist?
- What is the mass of the most common isotope?
- What is the Amu of silver?
- Who discovered the electron?
Can we see electron?
Electrons are much smaller than most atomic nuclei, so we are able to use them as a medium to view the features of atoms.
But seeing an electron is not possible.
Electrons are incredibly tiny and have extremely low mass.
Due to the HUP, there is no way to ‘see’ electrons..
Who named Neutron?
Rutherford determined that such a zero-charge particle would be difficult to detect by available techniques. By 1921 Rutherford and William Harkins had independently named the uncharged particle the neutron, while about that same time the word proton was adopted for the hydrogen nucleus.
What family is silver in?
Silver is located in Group 11 (Ib) and Period 5 of the periodic table, between copper (Period 4) and gold (Period 6), and its physical and chemical properties are intermediate between those two metals.
Where was silver found?
Production areas The principal sources of silver are copper, copper-nickel, gold, lead, and lead-zinc ores obtained from Canada, Mexico, Poland, Peru, Bolivia, Australia and the United States.
Where is the atomic mass?
Experimental data showed that the vast majority of the mass of an atom is concentrated in its nucleus, which is composed of protons and neutrons. The mass number (represented by the letter A) is defined as the total number of protons and neutrons in an atom.
What contributes the most to the mass of an atom?
Explanation: The protons and neutrons make up the nucleus. They both have a relative atomic mass of 1 compared to the electron which has a mass of 0.0005. This means, despite the nucleus being the smallest part of the atom, as the electron shell makes up most of it, the nucleus actually provides most of the mass.
How do you determine which isotope is most abundant?
To determine the most abundant isotopic form of an element, compare given isotopes to the weighted average on the periodic table. For example, the three hydrogen isotopes (shown above) are H-1, H-2, and H-3. The atomic mass or weighted average of hydrogen is around 1.008 amu ( look again to the periodic table).
What part of an atom has the largest mass?
Protons have a mass that is 1,836 times that of the electron, at 1.6726×10-27 kg, while neutrons are the most massive of the three, at 1.6929×10-27 kg (1,839 times the mass of the electron). The total number of protons and neutrons in an atoms’ nucleus (called “nucleons”) is called the mass number.
Do electrons actually exist?
electrons do exists! Yes. Every matter is made up of atoms and electrons , protons and neutrons are the fundamental particles of atom.
What is the mass of the most common isotope?
On Earth, carbon-12 accounts for almost 99 percent of naturally occurring carbon. Scientists use atomic mass units, or amu, to measure the mass of elements. Carbon-12 has an amu of exactly 12.000. This number is the reference standard for measuring the atomic mass of all other isotopes.
What is the Amu of silver?
107.868 amuThe atomic mass of silver as reported in the periodic table is 107.868 amu. Calculate the natural percent abundance of each isotope.
Who discovered the electron?
J.J. ThomsonDuring the 1880s and ’90s scientists searched cathode rays for the carrier of the electrical properties in matter. Their work culminated in the discovery by English physicist J.J. Thomson of the electron in 1897.