UJse your graphs to answer the following questions Circle the corect answer then

Question

UJse your graphs to answer the following questions Circle the corect answer then explain why it is correct. 1. Radii of the atoms lincrease, decrease] Explain why . as you go across (L to R) a perlod? 2. Radi of the atoms (increase, decresse] as you go down a family? Explain why 3. The energy needed to remove an electron from an atom generally lincrenses, decreases) as you go across a period? Explain why this occurs. 4. What is the relationship between ionization energy and members of a. The Alkali Metals: b. The Halogens: 5. Circle the atom with the largest atomic radius (size) in each group: a. aluminum, sulfur, phosphorus b. arsenic, bismuth, nitrogen c. iron, lithium, silicon d. barium, beryllium, bromine 13

Explanation / Answer

5.a,Alumium

b,Bismuth

c.Iron

d.Barium

4a, the ionisation enery of alkali metals are lower because of its ns1 electronic configuration. easy to remove that single electron

4b,the ionisation enery of halogens are higher because of its ns5electronic configuration.if one electron added it will attain noble gas configuration , in that case higher energy will be required to remove an electron.

3. Decreases, because of the increase in the atomic radii.

2. atomic radii increases as you go down the group, because of the increase in number of shells

1. atomic radii decreases as you go across the period, because the incoming new electron added to the same sub shell, the increase in the enegy of nucleus contracts the radius.

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