Answer:
The modern periodic table is arranged on order of increasing atomic number.
Explanation:
Modern periodic law states that the position of an element in the periodic table is a function of its atomic number.Atomic number is the number of electon(s) in a neutral atom and it determines the number of electon in the outermost shell of an atom called Group of an atom and also atomic determines the number of electonic shells called Period
this is opposed to the old periodic table in which elements were arranged based on their mass number
H2SO4 is referred to as a strong acid and is denoted as option A.
<h3>What is an Acid?</h3>
This refers to any substance which tastes sour when in water and changes the color of blue litmus paper to red. It is usually very corrosive and are used in industries for different functions.
H2SO4 is referred to as a strong acid because it dissociates completely in its aqueous solution or water.
Read more about Acid here brainly.com/question/25148363
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electron dot structure
Explanation:
Chemical reactions are driven by transfer or sharing of electrons between two or more atoms. To show a specie that is reactive, a sound knowledge of the distribution of electrons in the atom is necessary.
- The electron dot structure shows only chemical symbol of the element surrounded by dots which represents the valence electrons.
- The chemical symbol represents the nucleus and all electrons except the valence ones.
- The dots arranged on the four sides are called lone pairs. Those that are unpaired are called odd electrons.
- Chlorine has 7 valence electrons in its outermost shell.
- It is made up of 3 lone pairs and 1 odd pair of electron.
- The odd pair accounts for the reason why chlorine is very reactive.
- It will only require just one electron to join the odd pair so as to complete the octet and be like the noble gases.
Learn more:
lewis dot structure brainly.com/question/5248264
resonance brainly.com/question/6786947
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Answer:
CaCl₂ + CuSO₄ → CaSO₄ + CuCl₂.
Explanation:
- It is a replacement reaction, that cations and anions are replaced with each other.
So, it gives CaSO₄ and CuCl₂.
- To balance the reaction, we apply the law of conversation of mass, that the no. of atoms in the reactants side is equal to that in the products side.
So, the balanced reaction is:
<em>CaCl₂ + CuSO₄ → CaSO₄ + CuCl₂.</em>
Rojo, naranja, amarillo, verde, cian, azul y violeta
