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Which comes first in a chemical formula lithium or hydrogen?
Lithium. Lithium and hydrogen combine to make lithium hydride, an ionic compound, in which lithium is the cation (positive) and hydrogen is the anion (negative). The cation is always first in the chemical formula for an ionic compound.
Hydrogen lithium and sodium all have one valence electron Which element has the smallest atomic radius?
Among hydrogen, lithium, and sodium, hydrogen has the smallest atomic radius because it has the fewest number of electron shells and the smallest number of electrons, leading to a smaller atomic size.
Which metal has the lowest atomic number?
Hydrogen is a non metal element. Atomic number of it is 1. It is the element with lowest atomic number.
What element has the atomic number of 3?
Lithium has the atomic number of 3.
What is the atomic number and the atomic mass of lithium?
Hydrogen has 1 as its atomic number. That's because it has one proton in its nucleus. Hydrogen has three isotopes. Each isotope has one proton in its nucleus (naturally, because that's what makes it hydrogen). Atomic mass is the number of protons plus the number of neutrons in an atom's nucleus. Let's look at each isotope of hydrogen. "Simple" hydrogen has only the 1 proton in its nucleus. It's atomic number is 1 and its mass number is 1 (the 1 proton plus zero neutrons). Heavy hydrogen has 1 proton and 1 neutron in its nucleus. It's atomic number is 1 and its mass number is 2 (the 1 proton plus 1 neutron). Heavy, heavy hydrogen has 1 proton and 2 neutrons in its nucleus. It's atomic number is 1 and its mass number is 3 (the 1 proton plus 2 neutrons).
What is the average atomic number of lithium?
the atomic no.of lithium is 3
What is the atomic number for lithium chloride?
Lithium chloride does not have an atomic number because it is a compound, not an element. However, lithium as an element has an atomic number of 3.
How many protons are in a lithium nucleus?
The atomic number of lithium is 3. Therefor there are 3 protons and neutron in the nucleus of lithium. Lithium also has 4 neutrons. atomic # = protons and neutrons neutrons = rounded atomic mass - atomic number Sources- 7th grade Acc. Science
What has the lowest atomic number of any metal?
Bromine, because Bromine has an atomic mass of only 5.
What is the name of the element that has an atomic number of 3?
The name of the element that has atomic number 3 is Lithium (Li).
What two elements have the smallest atomic masses?
hydrogen and lithium
What has the smallest atomic radius out of hydrogen sodium and lithium?
Helium has the smallest atomic radius out of hydrogen, sodium, and lithium. This is because helium has a full electron shell, leading to a smaller effective nuclear charge that pulls the electrons closer to the nucleus, resulting in a smaller atomic radius.
