Question

1. which of the elements attracts electrons more sttrongly?

Sodium

Oxygen

Flourine

Silver

1. What element has the largest atomic radius?

Fluorine

Iodine

Tin

Carbon

2.From the following list select the nonmetals.

Calcium and Sulfur

Magnesium, Copper and Lead

Bromine Oxygen, and Argon

Sodium and Lithium

3. Which of the following statements are true about the Noble Gases.

1. They are very reactive elements.
2.They have full outer shell of electrons.
3. They have similar chemical properties.

5.Elements in a group have similar?

Atomic Radii

Chemical properties

Atomic numbers

Atomic masses

Answer 1

1) Attractiction of electrons is dependent on electronegativity of the atom. Following are the electronegativity values,

Sodium = 0.9

Oxygen = 3.5

Flourine = 4

Silver = 1.9

So, most electroneative element is Fluorine and hence it will attract the electrons more strongly.

2) Metals are the elements which can form positive ions by losing electrons. Hence, following are metals in given list:

Calcium, Magnesium, Copper, Lead, Sodium and Lithium.

Other remaining are non-metals: Sulfur, Bromine Oxygen, and Argon

3) Noble gases are inert in chemical nature. This interness is achived as they have full outer shell of electrons. Answer is They have full outer shell of electrons.

4) Elements in a group have similar chemical properties.