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8.5C Periodic tables

Study Slideshow

Why do noble gases have inactivity (stability)?

these atoms have full outershells.

15

Based on the periodic table what do you know about these elements?

They all have the number of energy levels/shells.

20

A researcher wants to experiment with an element that reacts like sulfur (S) but has a greater atomic mass. Which elements should the researcher select for the experiment?

Selenium, Tellurium, Polonium

25

What is the family group # and period for this element?

group 5. period 2

15

What characteristic of an element is the best indicator for determining what other elements it will react with?

The number of protons in the element

the number of valence Electrons

The number of neutrons of the element

The atomic mass of the element

15

Which of the following is true for elements listed in the same column of the periodic table?

they have similar chemical properties

have the same number of protons

mass of their atoms are similar

atoms are the same size

20

Based on the Periodic Table, which of the following elements has physical and chemical properties most like potassium?

Sodium

Neon

Bromine

Calcium

15

What common property do sulfur and oxygen have in common?

Sulfur and oxygen do not have a common property

Both are metals

Both are gases

Both have 6 valence electrons

15

When metals, nonmetals, and metalloids are compared according to luster, which is the best description of the appearance of metalloids?

Powdery

Dull

Either Shiny or Dull

Shiny

15

Which of the following lists of properties best describes nonmetals?

malleable, shiny conductor

brittle, shiny, conductor

Malleable, dull, insulator

Brittle, dull, insulator

15

What color is the blue section of the periodic table.

The Metals

15

Valence Electrons determie the __________________ .

Chemical Properties or Reactivity of the atom.

15

A student hypothesizes that sodium (Na) has different chemical properties than magnesium (Mg). Why would they think that?

Sodium and magnesium have different numbers of valence electrons. They are in different groups

15

What must be true of the element represented by the "X"?

It will have 6 total electrons.

It will have 28 protons

It will have chemical properties similar to C.

It will have a mass greater than 30.

15

What period is this element in?

Period 4

15

What 2 groups are the most reactive?

Groups 1 and 17 (7A)

15