What is the metalloid in Period 3?
Silicon (Si)
From the above data we may conclude that Silicon (Si) is the only metalloid in period 3 of the periodic table. Note: – Silicon is a chemical element denoted by the symbol Si and has atomic number 14. This element is a hard, brittle crystalline solid with a blue-grey metallic lustre.
Is a metalloid in third period of periodic table?
The metalloid in third period is Silicon.
What are two metalloids on the periodic table?
A series of six elements called the metalloids separate the metals from the nonmetals in the periodic table. The metalloids are boron, silicon, germanium, arsenic, antimony, and tellurium.
What nonmetal is in Period 3?
The third period contains eight elements: sodium (Na), magnesium (Mg), aluminium (Al), silicon (Si), phosphorus (P), sulfur (S), chlorine (Cl), and argon (Ar). Among these, three are metals (sodium, magnesium, aluminium), four are nonmetals (phosphorous, sulfur, chlorine, argon) and one is metalloid (silicon).
Which element in period 3 is the most metalloid?
Silicon. Silicon (symbol Si) is a group 14 metalloid. It is less reactive than its chemical analog carbon, the nonmetal directly above it in the periodic table, but more reactive than germanium, the metalloid directly below it in the table.
Which element of Period 3 has Valency 4?
Answer is Silicon . Its atomic number is 14. The electronic configuration is 2,8,4 . It requires 4 electrons to complete its octet thus it show a valency of 4.
What property decreases across period 3?
The graph shows how atomic radius varies across period 3: as the atomic number increases, the atomic radius decreases.
What element is in period 3?
The third period contains eight elements: sodium, magnesium, aluminium, silicon, phosphorus, sulfur, chlorine, and argon.
What element is in Period 3?
What is the first element located in period 3?
Sodium (Na) is the first element in the 3rd row (Period 3) in the periodic table. This means that the first shell and second shells of Na atom are filled to the maximum number of electrons. The first shell (1s) is filled with 2 electrons. The second shell (2s and 2p) has a total of 8 electrons.
What element is found in period 3 Group 17?
If you do everything right, you should land on chlorine, #”Cl”#. Chlorine is the element located in period 3, group 17 of the periodic table.
How many elements make up period 3?
The third period contains eight elements: sodium, magnesium, aluminium , silicon, phosphorus, sulfur, chlorine, and argon . The first two, sodium and magnesium, are members of the s-block of the periodic table, while the others are members of the p-block. All of the period 3 elements occur in nature and have at least one stable isotope.
Where on the periodic table are metalloids?
The metalloids are a group of elements in the periodic table. They are located to the right of the post-transition metals and to the left of the non-metals.