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b. matching
b. matching

... Atomic radii generally _____________________________________ as you move from left to right in a period. Atomic size generally _______________________________ within a given group because there are more ___________________________ occupied and an increased shielding effect, despite an increase in nu ...
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File

... except for Period 1. Across a period from left to right, the elements become ___________________ and ___________________ in their properties. o Most ____________________________________ are on the left side of the table (group 1) o Most ____________________________________ are on the right side (gro ...
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hc1(5)notes

... • In the periodic table, the f-block elements are wedged between Groups 2 and 3 in the sixth and seventh periods. • Their position reflects the fact that they involve the filling of the 4f sublevel. • The first row of the f block, the lanthanides, are shiny metals similar in reactivity to the Group ...
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The Periodic Table

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Chapter 6 Powerpoint

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The Periodic Table
The Periodic Table

...  Transition elements have properties similar to one another and to other metals, but their properties do not fit in with those of any other group.  Many transition metals combine chemically with oxygen to form compounds called oxides. ...
The Periodic Table
The Periodic Table

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mendeleev*s periodic table
mendeleev*s periodic table

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Organization & Characteristics of the Periodic Table

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Ch. 6 SG answers

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periodicity review sheet key

... 11. What noble gas has the same configuration as a Mg2+ ion? Neon 12. What noble gas has the same configuration as an O2- ion? Neon 13. What is the Shielding Effect? Attraction between the nucleus of an atom and the valence electrons is shielded by levels of electrons in between ...
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The History and Arrangement of the Periodic Table
The History and Arrangement of the Periodic Table

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REVIEW Through Course Task

... 10. While metals come in many colors, most at the far left side of the periodic table are very ____________ in color and tend to become more _________ or darker colored toward the center SILVER DULL and right side of the table. 11. While, as a general rule, most metals have high melting points, ther ...
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Bohr Model Activity

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Group 3 element



Group 3 is a group of elements in the periodic table. This group, like other d-block groups, should contain four elements, but it is not agreed what elements belong in the group. Scandium (Sc) and yttrium (Y) are always included, but the other two spaces are usually occupied by lanthanum (La) and actinium (Ac), or by lutetium (Lu) and lawrencium (Lr); less frequently, it is considered the group should be expanded to 32 elements (with all the lanthanides and actinides included) or contracted to contain only scandium and yttrium. The group itself has not acquired a trivial name; however, scandium, yttrium and the lanthanides are sometimes called rare earth metals.Three group 3 elements occur naturally, scandium, yttrium, and either lanthanum or lutetium. Lanthanum continues the trend started by two lighter members in general chemical behavior, while lutetium behaves more similarly to yttrium. This is in accordance with the trend for period 6 transition metals to behave more similarly to their upper periodic table neighbors. This trend is seen from hafnium, which is almost identical chemically to zirconium, to mercury, which is quite distant chemically from cadmium, but still shares with it almost equal atomic size and other similar properties. They all are silvery-white metals under standard conditions. The fourth element, either actinium or lawrencium, has only radioactive isotopes. Actinium, which occurs only in trace amounts, continues the trend in chemical behavior for metals that form tripositive ions with a noble gas configuration; synthetic lawrencium is calculated and partially shown to be more similar to lutetium and yttrium. So far, no experiments have been conducted to synthesize any element that could be the next group 3 element. Unbiunium (Ubu), which could be considered a group 3 element if preceded by lanthanum and actinium, might be synthesized in the near future, it being only three spaces away from the current heaviest element known, ununoctium.
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