The quality that differentiates hydrogen (H) from the other elements in group 1, the alkali metals, is that it is a non-metal.
Hydrogen is unique in the periodic table for its properties, which are not typical of the other group 1 elements that are all metals (such as lithium, sodium, potassium, etc.) and are much more reactive in their metallic state. While hydrogen does share the characteristic of having one valence electron like the alkali metals, its non-metallic nature sets it apart from them in both chemical and physical properties.
What quality differentiates hydrogen (H) from the other elements in group 1, the alkali metals?(1 point)
Responses
It has more than one valence electron.
It is not very reactive.
It is a non-metal.
It is found by itself in nature.
5 answers
what is the correct answer
The correct answer is:
It is a non-metal.
This is what differentiates hydrogen (H) from the other elements in Group 1, the alkali metals, which are all metals.
It is a non-metal.
This is what differentiates hydrogen (H) from the other elements in Group 1, the alkali metals, which are all metals.
On which atomic property proposed by Henry Moseley is the current periodic table of the elements based?(1 point)
Responses
electric charge
atomic weight
atomic number
nucleus size
Responses
electric charge
atomic weight
atomic number
nucleus size
The current periodic table of the elements is based on the atomic property proposed by Henry Moseley, which is:
atomic number
Moseley's work demonstrated that the atomic number, which is the number of protons in an atom's nucleus, provided a more accurate organization of the elements than atomic weight, which had been used previously.
atomic number
Moseley's work demonstrated that the atomic number, which is the number of protons in an atom's nucleus, provided a more accurate organization of the elements than atomic weight, which had been used previously.