Periodic Table of Elements form 4

Group 1 elements

• He

• Li

• K

• C

Which of the following statements is correct about Group 1 elements?

• React with water to produce hydrogen gas and alkaline solution

• React with magnesium to produce metal oxide

• React with hot irom to form brown solid

• React with Group 18 elements

Monoatomic gas.

• Helium gas

• Hydrogen gas

• Oxygen gas

• Ammonia gas

Elements in Period 3

• Li

• Na

• Mg

• Al

• B

Element that can form amphoteric oxide

• Ag

• Mg

• Al

• K

Special characteristics of Transition elements

• Can form coloured compounds

• Can act as catalyst

• Can have 1 oxidation number

• Cannot form complex ion

Reactivity of Group 17 elements when going down the group.

• Increase

• Decrease

• Constant

Element X is in the same group with sodium and Element X is more reactive than sodium. What is element X?

• Li

• K

• Mg

• Zn

Across period 3 in the Periodic Table of Elements, atomic size

• increase

• decrease

• remains the same

Why Group 18 elements are inert?

• Atoms achieve stable duplet or octet electron arrangement

• Atoms share their electrons

• Atom does not shares, donates or Receiver electron

• Atoms release electron