Question

The metalloids that has three valence electrons is

Answer 1

Вогоп
Boron is also the only metalloid in this group. The other four elements in the group—aluminum (Al), gallium (Ga), indium (In), and thallium (Tl)—are all metals. Group 13 elements have three valence electrons and are fairly reactive

Answer 2

The metalloid which has 3 valance electrons is $\boxed{{\text{boron}}}$.

Further explanation

A periodic table is a systematic arrangement of elements in different rows and columns. In periodic table, elements are organised in the order of increasing atomic number such that elements with same chemical and physical properties lie in same group. Horizontal rows are called periods, and vertical columns are called groups.

Within a periodic table, elements are further classified as metals, nonmetals, and metalloids. The elements placed at the left side of the table are called metals and the elements placed at the right of the table are called nonmetals. Between metals and nonmetals, certain elements are placed called metalloids that separate metals from nonmetals.

The general electronic configuration of the element present in the 13th group of the periodic table is ${\text{n}}{s^2}{\text{n}}{p^1}$.

Therefore, the number of valence electrons of the group 13this 3. Also, the metalloid element which is present in group 13th is boron. Hence the metalloid which has 3 valance electrons is boron.

Learn more:

1. Write an equation to show how HCO3 act as a base: brainly.com/question/9292185.

2. What is the de Broglie wavelength: brainly.com/question/10752738.

Answer details:

Grade: High school

Subject: Chemistry

Chapter: Periodic table

Keywords: metalloids, three valance electrons, elements, group 13th, periodic table, boron, aluminum, gallium, indium, thallium.