What are the lightest elements?

What are the lightest elements?

Hydrogen, most abundant in the universe, is the chemical element with atomic number 1, and an atomic mass of 1.00794 amu, the lightest of all known elements. It exists as a diatomic gas (H2).

Where are the lightest elements on the periodic table?

Note: Hydrogen is the lightest element in the periodic table but the periodic table is divided into groups. Among the group 1 elements, lithium is the lightest and among group 17 elements, fluorine is the lightest.

What are the two lightest elements?

The lightest elements (hydrogen, helium, deuterium, lithium) were produced in the Big Bang nucleosynthesis.

What is the lightest and heaviest element?

The lightest chemical element is Hydrogen and the heaviest is Hassium. The unity for atomic mass is gram per mol.

What are the five lightest elements?

Hydrogen, helium, lithium and beryllium are the lightest four elements, with one, two, three and four protons, respectively. Hydrogen has no neutrons, helium has two, lithium has four and beryllium has five, and the masses of the elements increase in that order.

What is the third lightest element?

Lithium
Lithium is the lighest solid and metal and the third lightest element. However it is soft, reacts with oxygen and water and is somewhat toxic. It melts at a relatively low temperature.

What is the lightest element in period 5?

technetium
Period 5 also includes technetium, the lightest exclusively radioactive element.

What is the lightest metal element?

lithium
Lightest Elemental Metals The lightest or least dense metal that is a pure element is lithium, which has a density of 0.534 g/cm3. This makes lithium nearly half as dense as water, so if lithium was not so reactive, a chunk of the metal would float on water. Two other metallic elements are less dense than water.

What is the lightest solid element?

lithium (Li), chemical element of Group 1 (Ia) in the periodic table, the alkali metal group, lightest of the solid elements.

Which is the most lightest element?

hydrogen
The lightest element is hydrogen and it possesses the simplest atomic structure. Furthermore, it is the most abundant element in the universe and can form bonds with almost any element, such as the elements of s and p-block.

Which of the following elements is in period 4?

The period 4 transition metals are scandium (Sc), titanium (Ti), vanadium (V), chromium (Cr), manganese (Mn), iron (Fe), cobalt (Co), nickel (Ni), copper (Cu), and zinc (Zn)….The Transition Metals.