Answer: properties
Explanation:
The element which has the properties
Mallablity
Ductility
Lusterous
High electric. Conductivity
High tensile strength is said to be metal.
<h3>Answer:</h3>
Potassium has the largest atomic radius.
<h3>Explanation:</h3>
Using periodic table trends one can easily compare the atomic radii of elements. The trends in atomic radii are as follow,
Trends in Groups:
Moving from top to bottom along the groups the atomic radii increases because as you move from top to bottom the number of shells increases hence, the distance of valence electrons from nucleus also increases and therefore, atomic radius increases.
Trends is Periods:
Moving from left to right along the periods the atomic radii decreases. This is because the number of protons and electrons increases but the the valence shell remain the same hence, causing more nuclear charge and more attraction between the valence electrons and nucleus.
<h3>Result:</h3>
Potassium, Calcium, Cobalt and Nickle all are present in same period. Potassium present at the extreme left will have greater atomic radii of 0.227 nm while Co and Ni at the middle of period will have atomic radii of 0.125 nm each. While, the atomic radius of Calcium next to K is 0.197 nm.
The Balanced Reaction is 2N₂O₃⁻ -----> 2 N₂ + 3 0₂
<h3>What is a Balanced Reaction ?</h3>
A reaction in which the number of atoms of each element in the reactant and the product are equal is called a Balanced Reaction .
It is given in the question:
To Balance the chemical equation.
N₂O₃⁻ -----> N₂ + 0₂
To balance the reaction , the number of molecules of each element , i.e. Nitrogen (N) and Oxygen (O) needs to be balanced
2N₂O₃⁻ -----> 2 N₂ + 3 0₂
To know more about Balanced Reaction
brainly.com/question/14280002
#SPJ1
2 moles of H₂ : 1 mole of O₂ : 2 moles of H₂O
number of moles of H₂ : number of moles of H₂O = 1 : 1
There are 5 moles of hydrogen so there must be 5 moles of water too.
The mass of H₂O is 90 g.
