Chemistry-32 The periodic table

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

• protons.

• neutrons.

• valence electrons.

• protons and neutrons.

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

• malleable

• brittleness

• high electrical conductivity

• unlikely to react with other elements

Tags

NGSS.HS-PS1-1

Alkali metals are extremely reactive because they

• have every small atomic masses.

• are not solid at room temperature.

• have one valence electron that is easily removed to form a positive ion.

• have two valence electrons that form compounds with calcium and magnesium.

The table above lists some information about certain elements in group 17. Which statement describes what happens to these elements as atomic number increases?

• Both melting point and boiling point decrease.

• Melting point increases and boiling point decreases.

• Melting point decreases and boiling point increases.

• Both melting point and boiling point increase.

Tags

NGSS.MS-PS1-4

Look at the periodic table. Which list of elements forms a group on the periodic table?

• Li, Be, B, C, N, O, F, and Ne

• He, Ne, Ar, Kr, Xe, and Rn

• B, Si, As, Te, and At

• Sc, Ti, V, Cr, Mn, Fe, Co, Cu, Ni, and Zd

The _________________ are a small group of elements that have both metallic and nonmetallic properties.

• Oxygen Group

• Nitrogen Group

• Metalloids

• Halogens

What is the FAMILY name for GROUP 2 elements? 

• Alkali Metals 
• Alkali Earth Metals 
• Transition Metals 
• Kardashians

Which element UNDER ATOMIC NUMBER 50 is artificially made? 

• Bromine 
• Tin
• Hydrogen 
• Technetium

Which of the following pairs shows the LARGEST atomic size element FIRST?

• Ge, Ni

• Si, Ar

• Rb, I

• Hg, Ba

Where in the Periodic Table is the metallic character of the elements greatest?

• A

• B

• C

• D