Table of Contents
- 1 Is oxygen more reactive than selenium?
- 2 Which of the following is a main group nonmetal element in period number 4 of the periodic table?
- 3 Which of the following elements is more reactive?
- 4 Which element in Period 4 has the most metallic properties?
- 5 How does reactivity of metals differ from nonmetals?
- 6 Which is the most reactive element in the periodic table?
Is oxygen more reactive than selenium?
Oxygen, sulfur and selenium are all group 16 elements. So, their electronegativity decreases down the group. Hence, we can conclude that out of the given options element oxygen is more reactive than the others.
Which of the following is a main group nonmetal element in period number 4 of the periodic table?
Period 4 element
| Hydrogen | ||
|---|---|---|
| Sodium | Magnesium | |
| Potassium | Calcium | Titanium |
| Rubidium | Strontium | Zirconium |
| Caesium | Barium | Hafnium |
What element is the most reactive non metal in Period 5?
element fluorine
Since the noble gases are a special group because of their lack of reactivity, the element fluorine is the most reactive nonmetal. It is not found in nature as a free element. Fluorine gas reacts explosively with many other elements and compounds and is considered to be one of the most dangerous known substances.
Which is more reactive selenium or sulfur?
Selenium tends to be more stable than sulfur in its intermediate oxidation states and less stable in the extreme ones. Accordingly, selenate and selenite are relatively easy to reduce to the element, and selenides are more reactive (reducing) than sulfides.
Which of the following elements is more reactive?
Fluorine is the most reactive element among the given elements.
Which element in Period 4 has the most metallic properties?
francium
The most metallic element is francium.
Which nonmetal is most reactive?
The element fluorine is the most reactive nonmetal. It is not found in nature as a free element. Fluorine gas reacts explosively with many other elements and compounds and is considered to be one of the most dangerous known substances.
Which nonmetal group is the most reactive?
Halogens
Halogens are the most reactive nonmetals on the periodic table. The halogens are so reactive due to their electronic configuration. They have 7 electrons in their outermost shell and desire to gain an extra electron to complete their shell of 8 electrons. By obtaining an electron, halogens form anions with a -1 charge.
How does reactivity of metals differ from nonmetals?
The periodic trend of reactivity depends on whether the elements are metals or nonmetals. For metals, reactivity increases down a group and from right to left across a period. Nonmetals do the opposite. For nonmetals, reactivity increases up a group and from left to right across a period.
Which is the most reactive element in the periodic table?
The halogens include fluorine, chlorine, bromine, iodine and astatine. The most reactive element from group seven is fluorine which is at the top of that section of the periodic table. The further down the group you go, the less reactive the element is.
Which is the last period with no unstable elements?
It sees the first appearance of d-block (which includes transition metals) in the table. Every single one of these elements is stable, and many are extremely common in the Earth’s crust and/or core; it is the last period with no unstable elements at all.
Which is the most resistant element in period 4?
Chromium. Chromium (Cr) is an element in period 4, between vanadium and manganese. Chromium is, like titanium and vanadium before it, extremely resistant to corrosion, and is indeed one of the main components of stainless steel. Chromium also has many colorful compounds, and as such is very commonly used in pigments, such as chrome green .