3. Make an argument for placing hydrogen in the halogen group rather than the alkali metals. 4. Compare and contrast ionization energy and atomic radius. 5. When the element with the atomic number of 119 is discovered, what group will it be in? Explain your logic. 6. A new element is discovered that is very unstable and highly reactive, and it likes to lose its one valence electron. In what group should this element be placed in? Explain.

The electronic configuration of hydrogen is given as 1s¹
The maximum of number of electrons in the S-subshell is just 2.
In order to complete its octet and be like the closest noble gas which is helium, it must be willing to accept one more electron.
The halogens in group 7 also have this unique property. They all have 7 electrons in their valence shell. This implies that they only need just an electron to complete their octet.
This shared property of hydrogen and the halogens makes for a strong reason for the element to be in group 7.

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Question 4

Comparison:

Ionization energy is a measure of the readiness of an atom to lose an electron. The lower the value, the easier it is for an atom to lose an electron and vice versa.
The atomic radius is the inter-nuclear distance between two covalently bonded atoms of non-metallic elements or half of the distance between two nuclei in the solid state of metals.
The atomic radius like the ionization are periodic trends and they tell about the nature of elements on the periodic table.

Contrast:

Atomic radius is estimated using two nuclei of an atom but ionization is determined for a single element.
Atomic radius increases down a group on the periodic table whereas ionization energy decreases down a group.
Across a periodic table, atomic radii decreases progressively from left to right but ionization energy increases across a period.

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Question 5

The element when discovered will be in group 1. This is the group of the alkali metals. These metals are highly reactive.

The shell structure of the element will be 2,8 18,32,32,18,8,1
A neutral atom will have a notation of [Og] 8s¹
This further implies that it will be in the s-block.
The outer electrons are useful in determining the periodic groups of elements.
For elements in group 1, they all have 1 valence electron. Those in group 8 have eight outermost electron.

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Question 6

The element will be group 1 as an alkali metal.

Group 1 elements are known for their high reactivity and their willingness to loose their valence electron.
Elements gain, lose or share electrons in order to attain stability.
The loss of the element's valence electron confers a special stability on them and makes them achieve an octet configuration.
Therefore the element will fit perfectly well in group 1.

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periodic functions https://brainly.com/question/11730855

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