Choose the most appropriate answer from the following option:

Among the period 2 elements, the element which has high electron affinity.

• Lithium

• Carbon 

• Chlorine 

• Fluorine

 

Group Number	IA	IIA	IIIA	IVA	VA	VIA	VIIA	0 18
2nd Period	Li		D			O	J	Ne
	A	Mg	E	Si		H	M
	R	T	I		Q	u		y

 

* In this table H does not represent Hydrogen.

* Some elements are given in their own symbol and position in the periodic table.
* While others are shown with a letter.

With reference to the table answer the following question:

I)  Identify the most electronegative element.

II) Identify the most reactive elements of group 1.

III) Identify the element from period 3 with least atomic size.

IV)  How many valence electrons are present in Q?

V)   Which element from group 2 would have the least ionisation energy?

VI)   Identify the noble gas of the fourth period.

VII)  In the compound of A and H, what type of bond would be formed and give the molecular formula for the same?

Identify the following  substance which is underlined:

The element which has the highest ionisation potential.

Give suitable chemical terms for the following;

A bond formed by a shared pair of electrons with both electrons coming from the same atom. 

Choose the most appropriate answer from the following option:
 Among the following compounds identify the compound that has all three bonds (ionic, covalent and coordinate bond).

• Ammonia

• Ammonium chloride

• Sodium hydroxide

• Calcium chloride