The Periodic Table Review

Which element is a metalloid?

• H

• Re

• Ne

• B

Atoms of elements that are in the same group have the same number of

• protons.

• neutrons.

• valence electrons.

• protons and neutrons.

In Mendeleev's periodic table, elements in each column had similar

• atomic masses.

• properties.

• atomic numbers.

• symbols.

Elements in an elemental family have similar

• atomic symbols.

• atomic sizes.

• atomic weights.

• chemical properties.

Which group is very stable due to the fact that they have a full outermost energy level?

• alkali metals

• halogens

• alkaline-earth metals

• noble gases

Which of the following is a property of group 18 elements?

• malleable

• brittleness

• high electrical conductivity

• unlikely to react with other elements

Based on its location on the periodic table, which of these elements most likely has physical and chemical properties most similar to boron (B)?

• magnesium (Mg)

• aluminum (Al)

• neon (Ne)

• chlorine (Cl)

A ________________________ is an electron located in the outer most shell.

• Alkali electron

• Halogen electron

• Noble electron

• Valence electron

Tags

NGSS.HS-PS1-1

Which is true about the 2 elements in the picture?

• they are in the same period

• they are no where near each other

• they are in the same group with element R on top

• they are in the same group with element Q on top

Which element is in Group 18 and period 4?

• Krypton

• Argon

• Xenon

• Bromine