periodic table, day 6, CH101

Across the period atomic size decreases due to

• Shielding effects

• Increase in nuclear force

• Decrease in nuclear force

• Photoelectric effect

The modern periodic table is arranged based upon atomic

• Number

• Density

• Mass

• Radius

Which group contains elements in the solid, liquid, and gas phases at 298 K and 1 atm?

• 1

• 17

• 16

• 18

An element that has a high first ionization energy and is chemically inactive would most likely be

• A noble Gas

• A halogen

• A transition element

• An alkali metal

At the end of each period the valence shell is

• Incomplete

• Full filled

• Half filled

• Singly Occupied

The alkali metal which comes first in periodic table is

• Hydrogen

• Lithium

• Sodium

• Calcium

Lanthanides and actinides are also called

• Normal elements

• Transition elements

• Inner Transition elements

• Noble Gases

Which orbital has the lower penetration power

• s

• p

• d

• f