Table of Contents
- 1 What is a low atomic number?
- 2 Which of the following elements has the lowest atomic mass?
- 3 What is the atomic number of manganese?
- 4 Which is the lightest element in the periodic table?
- 5 What is the atomic number of uranium?
- 6 What is the atomic no of iron?
- 7 Which element has least ionization?
- 8 Which element with the greatest atomic mass?
- 9 What element has the lowest mass per nuclear particle?
- 10 How do you calculate atomic number of an element?
What is a low atomic number?
Elements with a low atomic number (<40) exhibit an exponential decay in abundance, whereas elements of higher atomic number are of relatively constant abundance. The relative abundance of elements above 28 is less variable than elements of lower atomic number.
Which of the following elements has the lowest atomic mass?
hydrogen
Detailed Solution. The lowest atomic mass of the elements is hydrogen. The Atomic Mass is the sum of the mass of protons and neutrons present in the atom of the element. The atomic mass of hydrogen is 1 unit, Helium is 2 units, Lithium is 3 units and that of Nitrogen is 7 units.
Which has the highest atomic number?
Oganesson has the highest atomic number and highest atomic mass of all known elements. The radioactive oganesson atom is very unstable, and since 2005, only five (possibly six) atoms of the isotope oganesson-294 have been detected.
What is the atomic number of manganese?
25
Manganese/Atomic number
Which is the lightest element in the periodic table?
Hydrogen
Hydrogen is the lightest element and exhibits the simplest atomic structure.
Which metal has lowest ionization energy?
Cesium
From this trend, Cesium is said to have the lowest ionization energy and Fluorine is said to have the highest ionization energy (with the exception of Helium and Neon).
What is the atomic number of uranium?
92
Uranium/Atomic number
Uranium is a silvery-white metallic chemical element in the periodic table, with atomic number 92. It is assigned the chemical symbol U. A uranium atom has 92 protons and 92 electrons, of which 6 are valence electrons.
What is the atomic no of iron?
26
Iron/Atomic number
In February, we have selected iron, the most abundant element on Earth, with chemical symbol Fe (from the Latin word “ferrum”) and atomic number 26.
Which element is most heaviest?
uranium
The heaviest naturally stable element is uranium, but over the years physicists have used accelerators to synthesize larger, heavier elements. In 2006, physicists in the United States and Russia created element 118.
Which element has least ionization?
Which element with the greatest atomic mass?
When a heavier element is discovered (e.g., element 120), then that will become the new heaviest element. Ununoctium is the heaviest element, but it is man-made. The heaviest naturally-occurring element is uranium (atomic number 92, atomic weight 238.0289). Ionic and Atomic Radius – Periodic Trends
What element has the smallest atomic number?
The smallest atom in the periodic table in terms of mass is hydrogen, which has only one proton and one electron. Hydrogen has no neutrons. The element has an atomic number of 1 and atomic weight of 1.00794, making it the smallest of all the elements.
What element has the lowest mass per nuclear particle?
The element that has the lowest mass per nuclear particle and therefore cannot release energy by either fusion or fission is the element Fe or iron. Iron is referred to as a special element due to its nuclear binding energy.
How do you calculate atomic number of an element?
To calculate the atomic mass of a single atom of an element, add up the mass of protons and neutrons. Example: Find the atomic mass of an isotope of carbon that has 7 neutrons. You can see from the periodic table that carbon has an atomic number of 6, which is its number of protons.