What is the most active element in Group 17?
FLUORINE
What are the horizontal rows called?
Each box represents an element and contains its atomic number, symbol, average atomic mass, and (sometimes) name. The elements are arranged in seven horizontal rows, called periods or series, and 18 vertical columns, called groups. Groups are labeled at the top of each column.
What are the elements in group 17 called?
The halogen elements are the six elements in Group 17 of the periodic table. Group 17 is the second column from the right in the periodic table and contains six elements: fluorine (F), chlorine (Cl), bromine (Br), iodine (I), astatine (As), and tennessine (Ts).
What is the most active element in Group 17 called?
What does Group 16 react with?
Chemical Properties The group sixteen elements react with hydrogen to form hydrides of the sort H2E, where E could be any element- oxygen, sulfur, selenium, tellurium or polonium.
Why group 15 are called Pnictogens?
Group 15 elements are also known as pnictogens because in Greek pigeon means to cholk or stifle. In the absence of the oxygen, molecular nitrogen has this property. That’s why group 15 elements are known as either nitrogen family or pnictogens.
Why is it difficult to ionise Group 16 elements?
The chalcogens have no stable metallic elements. Because the electronegativity of the chalcogens decreases down the group, so does their tendency to acquire two electrons to form compounds in the −2 oxidation state. The lightest member, oxygen, has the greatest tendency to form multiple bonds with other elements.
Why does oxygen differ considerably from other elements of group 16?
Oxygen differs considerably from the rest of the elements in its group. Due to it’s small size and high electro-negativity and the absence of d-orbitals in the valence shell.
What is the trend in melting points of transition metals in a series?
The melting and boiling points of transition elements increases from scandium (1530 ∘C) to vanadium (1917 ∘C). They increase because as we go across the group, we have more unpaired (free) electrons.
Is CL more reactive than F?
The thing that makes fluorine so reactive is its electronegativity. Electronegativity is the tendency of an atom to attract a shared pair of electrons. Therefore, since fluorine has a higher electronegatvity than chlorine, fluorine is more reactive.
Is CL more reactive than Br?
Why: Chlorine is more reactive the bromine because chlorine radical is less stable then bromine radical.
Why is C less reactive than a?
Down the group, the atomic size increases. Therefore, the attraction of the nucleus for the outside electrons decreases. This means that down the group of non-metals, reactivity decreases. Thus, the element C is less reactive than the element A.
Which is more active element A or C?
Hence Element A is the most active element. (c) Element C has 7 valence electrons and tends to gain one electron to form the octet. So it will form an anion.
Which element is the most active?
Fluorine