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How do atomic numbers and atomic masses increase in the periodic table?

Atomic numbers increase from left to right across a period on the periodic table. This is because each element in a period has one more proton in its nucleus compared to the element before it. Atomic masses generally increase from left to right as well, but there may be deviations due to isotopes or other factors. Within a group or column, atomic numbers and atomic masses increase from top to bottom as each successive element has more electrons and neutrons than the one above it.


What is the device used to determine atomic masses?

A mass spectrometer is a device used to determine atomic masses by separating and measuring the mass-to-charge ratio of ions. By analyzing the deflection of ions in a magnetic or electric field, the mass spectrometer can provide accurate measurements of atomic masses.


Which term describes atoms with different atomic masses due to varying numbers of neutrons?

Isotopes describe atoms with different atomic masses due to varying numbers of neutrons.


What are atoms of the same element thay have different atomic masses?

Atoms of the same element that have different atomic masses are called isotopes. Isotopes of an element have the same number of protons but different numbers of neutrons. This results in variations in atomic mass while maintaining the same chemical properties.


What atoms has different masses but the same atomic number?

Isotopes of an element have different masses but the same atomic number. Isotopes have the same number of protons and electrons but different numbers of neutrons in their nuclei.

Related Questions

What atom is standard for atomic masses?

Carbon (12).


What nuclide is used as the standard in the relative scale for atomic masses and What is it's assigned atomic mass?

Carbon-12 (12C) is used as the standard in the relative scale for atomic masses, and its assigned atomic mass is 12 atomic mass units.


What nuclide is used as standard relative scale for atomic masses?

Carbon-12 is used as the standard relative scale for atomic masses. This is defined as having a mass of exactly 12 atomic mass units (u). Other elements are compared to this standard to determine their atomic masses.


State the name and the mass of the isotope relative to which all atomic masses are measured?

The isotope used as the reference for atomic masses is carbon-12, with a mass of 12 atomic mass units (amu).


Is this statement true or false The isotope hydrogen-1 is the standard used for the relative scale of atomic masses?

True. Hydrogen-1, also known as protium, is the standard used for the relative scale of atomic masses. Its mass is defined as exactly 1 atomic mass unit (amu) on the atomic mass scale.


Who was The first attempt at publishing a list of relative atomic masses?

John Dalton tried to work out the relative masses of atoms; but his calculations were wrong, although the principle was correct. He was, however, the first to establish a table of atomic masses with hydrogen, the lightest atom, as the standard.


What did Dalton used the lightest element as his standard for atomic mass?

Dalton used hydrogen as his standard for atomic mass because it is the lightest element and was convenient for comparing the masses of other elements.


What is taken as a standard for determination of relative atomic masses Amonia Oxygen Sulphur Iron filling?

All things considered. It is the standard American way.


Si units used for the masses of atomic particles?

The atomic mass unit (u) or unified atomic mass unit (amu) is the standard unit used to measure the masses of atomic particles such as protons, neutrons, and electrons. 1 atomic mass unit is defined as 1/12th of the mass of a single carbon-12 atom.


What isotope serves as the current standard for the atomic mass scale?

with C14 atom


By adding the atomic masses?

You will get the atomic bomb!


If the atomic mass of oxygen is 16 and the atomic mass of hydrogen is 1 how do the current atomic masses compare to daltons?

Atoms are made up of protons, neutrons, and electrons. The atomic mass listed on the periodic table is an average of all the isotopes of an element, which includes the mass of the protons and neutrons. Therefore, the atomic masses listed for oxygen (16) and hydrogen (1) are in daltons.