- What element is in Group 2 and Period 3?
- Which element is in Group 2 Period 4?
- Why does sodium belong in Period 3?
- What element is in group 13 Period 2?
- What does Group 17 on the periodic table have in common?
- What is the difference between a family of elements and elements in the same period?
- Is FM a main group element?
- What element is Group 2 Period 2?
- Why do boiling points increase down Group 7?
- Which element in Period 2 has the most mass?
- Why is Group 2 Period 3 mg?
- What element is in group 17 Period 2 of the periodic table?
- What element is in Group 17 and Period 3?
- What is the most active element in Group 17?
- Are halogens dangerous or toxic?
What element is in Group 2 and Period 3?
magnesiumHence the name of the element is magnesium..
Which element is in Group 2 Period 4?
element zirconiumThis is the element zirconium , Zr . You should not have to remember these symbols, because a Periodic Table should always be supplied.
Why does sodium belong in Period 3?
In the whole of period 3, the outer electrons are in 3-level orbitals. These are all the same sort of distances from the nucleus, and are screened by the same electrons in the first and second levels. The major difference is the increasing number of protons in the nucleus as you go from sodium across to argon.
What element is in group 13 Period 2?
The boron family contains elements in group 13 of the periodic talbe and include the semi-metal boron (B) and the metals aluminum (Al), gallium (Ga), indium (In), and thallium (Tl).
What does Group 17 on the periodic table have in common?
These five toxic, non-metallic elements make up Group 17 of the periodic table and consist of: fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At). … Because the halogen elements have seven valence electrons, they only require one additional electron to form a full octet.
What is the difference between a family of elements and elements in the same period?
The vertical columns on the periodic table are called groups or families because of their similar chemical behavior. The horizontal rows on the periodic table are called periods.
Is FM a main group element?
In chemistry and atomic physics, the main group is the group of elements (sometimes called the representative elements) whose lightest members are represented by helium, lithium, beryllium, boron, carbon, nitrogen, oxygen, and fluorine as arranged in the periodic table of the elements.
What element is Group 2 Period 2?
Group 2A — The Alkaline Earth Metals. Group 2A (or IIA) of the periodic table are the alkaline earth metals: beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra).
Why do boiling points increase down Group 7?
The melting points and boiling points of the halogens increase going down group 7. This is because, going down group 7: the molecules become larger. the intermolecular forces become stronger.
Which element in Period 2 has the most mass?
1 Answer. The element in Period 2 with most mass is clearly the element with the highest atomic number, Z , and that is Ne , Z=10 , 21.08⋅g⋅mol−1 .
Why is Group 2 Period 3 mg?
Magnesium with an atomic number of 12 is in Group 2 as it has 2 electrons in its valence (outermost) shell. Its 12 electrons are arranged 2.8. 3. This is why it is placed in period 3 as its valence electrons are filling the 3rd energy level / shell.
What element is in group 17 Period 2 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 element is in Group 17 and Period 3?
ChlorineChlorine is a halogen in group 17 and period 3.
What is the most active element in Group 17?
FLUORINEGroup 17 elements are called HALOGENS. Group 18 elements are called NOBLE GASES. As you go from left to right across the periodic table, the elements go from (METALS / nonmetals) to (metals / NONMETALS). The most active element in Group 17 is FLUORINE.
Are halogens dangerous or toxic?
Halogens are highly reactive, and as such can be harmful or lethal to biological organisms in sufficient quantities. This high reactivity is due to the high electronegativity of the atoms due to their high effective nuclear charge.