FREE ONLINE CHEMISTRY TEST 02

FREE ONLINE TEST CHEMISTRY 02

1 / 10

Which period contains only two elements?

Fourth

Third

Second

First

2 / 10

The most metallic element among the following is:

Sodium

Cesium

Potassium

Lithium

3 / 10

Which of the following is a metalloid?

Lead

Sodium

Silicon

Phosphorus

4 / 10

The first transition series begins with

Iron

Scandium

Cobalt

Copper

5 / 10

Across a period, atomic size generally

Decrease

Increase

Remain same

First increases then decreases

6 / 10

Group 2 elements are called

Alkaline earth metals

Alkaline metals

Noble gases

Transition elements

7 / 10

The element with electronic configuration [He] 2s² 2p⁵

Carbon

Oxygen

Fluorine

Neon

8 / 10

Which pair is isoelectronic?

Na⁺ and K⁺

O²⁻ and F⁻

Mg²⁺ and Ca²⁺

N³⁻ and F⁻

9 / 10

The element with the highest electronegativity is:

Fluorine

Chlorine

Nitrogen

Oxygen

10 / 10

Which is a noble gas?

Nitrogen

Neon

Oxygen

Fluorine

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