QuestionArrange the elements according to atomic radius. Largest radius to Smallest radius Answer Bank K Ca Ga Ge As Sc Br Kr
The elements according to the decreasing atomic radius are arranged as-
K, Ca, Sc, Ga, Ge, As, Br, Kr
An atomic radius is half the distance between adjacent atoms of the same element in a molecule. It is a measure of the size of the element’s atoms, which is typically the mean distance from the nucleus centre to the boundary of its surrounding shells of the electrons.
An atom gets larger as the number of electronic shells increase; therefore the radius of atoms increases as you go down a certain group in the periodic table of elements. The atomic radius decreases on moving from left to right across a period.
Thus the elements according to the decreasing atomic radius are arranged as -
Models can have the same general appearance as real-ufe objects. True or false
Because its true
Counting atoms worksheet
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Explanation: these are very reliable sources to find good worksheets
What makes physical change a physical change and a chemical change a chemical change
A physical change is any change in a substances form that does not change its chemical makeup. Examples of physical changes are breaking a stick or melting ice. A chemical change occurs when atoms of a substance are rearranged, and the bonds between the atoms are broken or formed. HOPE THIS HELPS!!
A physical change is reversible and the changes made are only physical (smell, physical state, volume, etc) and most importantly no new substance is formed. In a chemical change, a new substance is formed, the chemical properties are changed, and it's permanent.
Nitrogen dioxide is one of the many oxides of nitrogen (often collectively called "") that are of interest to atmospheric chemistry. It can react with itself to form another form of , dinitrogen tetroxide. A chemical engineer studying this reaction fills a flask with of nitrogen dioxide gas. When the mixture has come to equilibrium he determines that it contains of nitrogen dioxide gas. The engineer then adds another of nitrogen dioxide, and allows the mixture to come to equilibrium again. Calculate the pressure of dinitrogen tetroxide after equilibrium is reached the second time. Round your answer to significant digits.
Write the reaction of ammonia and water. Label the acid, base, conjugate acid and conjugate base.Is Ammonia a weak or strong base?
According to the Bronsted Lowry concept, Bronsted Lowry-acid is a substance that donates one or more hydrogen ion in a reaction and Bronsted Lowry-base is a substance that accepts one or more hydrogen ion in a reaction.
Or we can say that, conjugate acid is proton donor and conjugate base is proton acceptor.
The equilibrium reaction will be,
In this reaction, and are base and acid and and are conjugate acid and conjugate base respectively.
Ammonia is a weak base because it accept proton from the water and gives fewer hydroxide ions.
Which particles are equal in number for an atom with a neutral charge?