Periodic Table Properties

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

what happens when we move from top to bottom in group

• valency decreases

• atomic radius increases

• atomic radius decreases

• valence electrons increases

Sulphur is........

• Non metal

• Metal

• Metalloid

• Inert gases

What is the valency of Krypton

• 0

• 1

• 2

• 3

which element is this ?

• Neon

• Potassium

• Calcium

• Argon

Tags

NGSS.MS-PS1-1

What characteristic is common to all noble gases?

• They are all solid at room temperature.

• They are highly reactive.

• They are colorless gases and do not easily form compounds.

• They are radioactive.

Which group of elements is known for being highly reactive and typically found in compounds rather than in their pure form?

• Noble Gases

• Alkali Metals

• Transition Metals

• Rare Earth Metals

What do the alkali earth metals and alkali metals have in common?

• They are both found in nature as pure elements.

• They both have one electron in their outer shell.

• They are both highly reactive.

• They are both used in fireworks.

Which of the following elements is classified as a metalloid?

• Silicon

• Sodium

• Iron

• Argon

Why are noble metals considered valuable?

• They are radioactive.

• They are resistant to corrosion and oxidation.

• They are found in large quantities in nature.

• They are used in batteries.