Graduation in modern periodic table

The atoms along the staircase are called 

• metals
• nonmetals
• metalloids
• noble gases

The atoms on the right of the staircase are called

• metalloids

• non-metals

• metals

• noble gases

Tags

NGSS.MS-PS1-1

As you move down the group in the periodic table atomic size increases

This is because ____________.

• The atoms have more mass.

• The atoms have more protons.

• The number of energy levels increases

• The atoms have more nuetrons

As you move across the period of the periodic table from left to right atomic size decreases because, ______________.

• the atoms have more mass.

• the atoms have less mass

• The attraction force of the positive protons increases

• the atoms have less electrons.

Which one has the largest radius?

• Lithium (Li, atomic #3)

• Boron (B, atomic #5)

• Flourien (F , atomic #9)

• Nitrogen (N, atomic #7)

What is the measuring unit of atomic radius?

• Picometer

• Centimeter

• Millimeter

• Nanometer

Look at Group 1, Which of the following atoms has the largest atomic radius?

• potassium (K)

• rubidium (Rb)

• Lithium (Li)

• cesium (Cs)

Look at Period 4, Which of the following atoms is the SMALLEST following the predicted atomic radius trend??

• Potassium (K)

• Manganese (Mn)

• Iron (Fe)

• Copper (Cu)

Electronegativity is...

• the ability of an atom to attract the electrons

• the ability of an atom to lose electrons

• the energy required to remove an electron from a specific atom

• how easy it is to make friends.

Fluorine is more active than chlorine because ...........

• fluorine has valency 1 but chlorine has 2

• atomic number of fluorine is less than chlorine

• atomic size of fluorine is less than chlorine

• atomic size of fluorine is more than chlorine