Chemistry Quiz: Periodic Classification Of Elements

They are borderline elements that exhibit both metallic and non metallic properties to some extent

They usually act as electron donors with non-metals and as electron acceptors with metals

Some of these elements are boron, silicon and germanium

They are good conductors of heat and electricity

A

B

C

F

(i), (iii) and (iv)

(ii), (iii) and (iv)

(ii) and (iii)

(ii) and (iv)

F < O < C < Be < Li

Li < Be < C < O< F

F < O < C < Be < Li

F < O < Be < C < Li

(i) and (ii)

(ii) and (iii)

(iii) and (iv)

(i) and (iv)

Be(OH)₂

Ba(OH)₂

Ca(OH)₂

Mg(OH)₂

Ne,Ca,Na

H₂,N₂, O₂

Li, Na, K

Na, Br, Ar

It causes energy to be released

It causes energy to be absorbed

It is expressed in electron volts

It involves formation of an anion

Atomic number

Atomic volume

Number of valence electrons

Atomic mass

I-A

IV-A

VII-A

VIII-A

All the metals are good conductor of electricity

All the metals are good conductor of heat

All the metals form positive ions

All the metals form acidic oxides

1

2

3

4

C > B > Be > Li

C > Be > B > Li

B > C > Be > Li

Be > Li > B > C

(i) only

(i), (ii) and (iii)

(i), (ii) and (iv)

(iv) only

D-electrons

F-electrons

P-electrons

S-electrons