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What element has the lower atomic number of any group?
Lithium is the element with the lowest atomic number in Group 1 (alkali metals), while hydrogen is the element with the lowest atomic number in Group 17 (halogens) and Group 18 (noble gases).
Which atom has atomic number zero and mass number zero?
An atom with atomic number zero and mass number zero does not exist in nature. The atomic number represents the number of protons in the nucleus, and an atom must have at least one proton to be stable.
Why does ammonium belong to group zero?
NH4+ is kept in group zero of qualitative analysis because it is the only non metalliccation. . its test is quite different than that of other cations.it does not resemble any other cation so it tested first of all in zero group .the reagent for zero group is Na OH solution.if it is not tested in zero group then in the subsequent groups we use NH4 OH asreagents. then the solution will automatically contains NH4+ ion if it would havenot been present in the original mixture to analysed.SO IT IS EVIDENT THAT THE NH4+SHOULD BE KEPT IN ZERO GROUP.
Why does an atomic number increase?
If you mean looking at the next element on the table then the mass would increase. However, the atomic number is only the number of protons in an atom and is not a true indicator of atomic weight. Variations in Neutron count can cause differences in atomic weights.
What is hydrogen's number of neutrons equals mass number - atomic number equals?
The number of neutrons in an atom can be calculated by subtracting the atomic number (number of protons) from the mass number. For hydrogen, the atomic number is 1 and the mass number is also 1. Therefore, the number of neutrons in hydrogen is 1 (mass number - atomic number = 1 - 1 = 0 neutrons).
What are some other names for Noble gases?
Another name for noble gases is inert gases.
Who introduced zero group in periodic table?
mendeleev and others proposed the zero group
How are elements indentified on the periodic table?
Elements in the table are identified by different things. What they are made of, atomic mass, and atomic number. Elements can also be identified by what state of matter they are at zero degrees Celsius and standard pressure which 1atm. The most current, standard table has 117 different elements.
Which element have zero valency?
Noble gases were considered elements with zero valency; but today a significant number of noble gases (especially xenon) are known.
Oxidation number of groups in periodic table?
Group 1 elements have an oxidation number of +1, group 2 elements have an oxidation number of +2, group 17 elements have an oxidation number of -1, and group 18 elements (noble gases) have zero oxidation number since they are chemically unreactive.
What are Zero group elements?
The Group 0 elements are called the noble gases. These are the six gases that are almost completely inert. Since they do not lose or gain any electrons, their valence is 0.
What element has the lower atomic number of any group?
Lithium is the element with the lowest atomic number in Group 1 (alkali metals), while hydrogen is the element with the lowest atomic number in Group 17 (halogens) and Group 18 (noble gases).
Why is the group consisting of noble gases labeled as zero group?
They were once labeled group 0 in the periodic table because it was believed they had a valence of zero, meaning their atoms cannot combine with those of other elements to form compounds.
Which atom has atomic number zero and mass number zero?
An atom with atomic number zero and mass number zero does not exist in nature. The atomic number represents the number of protons in the nucleus, and an atom must have at least one proton to be stable.
Why elements of group 18 are zero valent?
because they have completely filled orbitals (or shells). hence generally are inert
Is Family of noble gases named as zero-group?
They were once labeled group 0 in the periodic table because it was believed they had a valency of zero, meaning their atoms cannot combine with those of other elements to form compounds.
What elements have no valency?
The noble gases, or group 18 elements, have oxidation states of zero. However, their chemistries are not as barren as one might expect. Please see the link for the periodic table and individual articles for these elements.
