0
What else can I help you with?
What is the little number immediately to the right of each elements in a compound?
The little number immediately to the right of each element in a compound is called a subscript. It indicates the number of atoms of that element present in the compound.
What do you count to decide whether or not an equation is balanced?
If you count all of the atoms of each element on the left and all the atoms of each element on the right and the numbers on the left and right are equal for EVERY element, then the equation is balanced.
Why does each period in the periodic table end with a noble gas?
Each period in the periodic table ends with a noble gas because they have complete outer electron shells, making them stable and unreactive. This pattern reflects the filling of electron shells in atoms as you move across a period.
What do you notice about the number of atoms on each side of a chemical equation?
In a balanced chemical equation, the number of atoms for each element on the reactant side should equal the number of atoms for the same element on the product side. This helps maintain the law of conservation of mass, which states that mass is conserved in a chemical reaction.
How many atoms of oxygen are there on each side what chemical equation 2 Mg O2 -- 2 MgO?
There are two atoms of oxygen on each side.
What do you call elements in a row on the periodic table?
Elements in a row on the periodic table are called periods. They represent the number of electron shells an element's atoms have. Each period corresponds to the energy level of the electrons in an element's atoms.
How does the size of the atoms of the elements in the period vary from left to right?
It increases. Read the atomic numbers; they go up by one, with each space you move to the right, meaning there is one more proton in the nucleus.
Each period in the periodic table corresponds to .?
Each period in the periodic table corresponds to the number of electron shells an element's atoms possess. As you move from left to right across a period, the number of protons increases gradually, resulting in a corresponding increase in the number of electron shells.
What is the position of period in the periodic table?
The period of an element in the periodic table refers to its horizontal row. Each period represents the number of electron shells an element's atoms have.
Why must you put atoms that are alike at right angles to each other?
You do not! In graphite, for example, atoms of carbon are in the form of hexagons.
Why is Cl2 plus 2Nal-2NaCl plus I2 a balanced equation?
The equation is balanced because the number of each type of atom is the same on both sides of the equation. There are two Cl atoms on the left side and two Cl atoms on the right side, two Na atoms on the left side and two Na atoms on the right side, and two I atoms on the left side and two I atoms on the right side.
Every balanced chemical equation each side has the same number of?
same number of each element
What is the electronegativity of the each of the atoms on estrone?
The electronegativity of the atoms in estrone vary. For example, oxygen is more electronegative than carbon, so the oxygen atoms in estrone will have higher electronegativity values compared to the carbon atoms. It follows the trend where electronegativity increases across a period from left to right on the periodic table.
Why do the properties of elements change across the period?
They change because the atomic number and mass differ from each other element. Going across the Periodic Table to the right, the atoms get smaller because another proton is added each time so the effective nuclear charge experienced by the electrons is greater and the electrons are pulled closer to the nucleus. Electronegativity increases as you progress across a period because smaller atoms are usually more likely to gain an electron. Ionization energy increases across a period because the atoms are smaller, pulled closer to the nucleus, so it takes more energy to break an electron away.
What is meant by preiod of elements?
The period of elements in the periodic table refers to the horizontal rows that categorize elements based on the number of electron shells they have. Each period corresponds to the number of electron shells an element's atoms possess, ranging from 1 to 7 as we move from left to right across the table.
Does the number of each period in the modern periodic table represents the number of?
Yes, the number of each period in the modern periodic table represents the number of electron shells (energy levels) that an atom's electrons occupy. Each period corresponds to a new energy level being filled by the electrons in the atoms of the elements in that period.
The number of atoms of each element present in the molecule is indicated by what?
The number of atoms of each element present in a molecule is indicated by the subscript to the right of the element symbol in the chemical formula. For example, in H2O, there are 2 hydrogen atoms and 1 oxygen atom.
