Element of second period are called:A) MetalsB) Non-metalsC) Bridge elementD) Normal elements

The correct answer is D) Normal elements.

Explanation:
Elements of the second period of the periodic table include:

Lithium (Li)
Beryllium (Be)
Boron (B)
Carbon (C)
Nitrogen (N)
Oxygen (O)
Fluorine (F)
Neon (Ne)
These elements consist of both metals (e.g., Li, Be) and non-metals (e.g., B, C, N, O, F, Ne).

Key points:
Metals: Lithium and Beryllium are considered metals.
Non-metals: Boron to Neon are mostly non-metals.
Bridge elements: These refer to the transition between metals and non-metals across periods and groups. Elements of the second period aren't typically referred to as bridge elements.
Normal elements: Elements from groups 1, 2, and 13 to 18 are considered "normal" or representative elements. All second-period elements fall into this category.
Thus, second-period elements are collectively called normal elements.