Part 1: Name two elements that have the same properties as magnesium (Mg). (4 points)
Part 2: Determine the number of protons, electrons, and neutrons present in an atom of potassium (K). Explain how you determined your answer using complete sentences. (6 points)

Two elements having same properties as magnesium are calcium and strontium. The number of protons and neutrons in potassium is 19 and number of neutrons is 20.

What is periodic groups?

Groups in periodic table are vertical columns with elements of similar physical and chemical properties. All elements are classified into different groups based in the number of valence shell electrons.

Elements of same group have same number of valence electrons. The element magnesium Mg have 12 electrons with 2 valence electrons. Its group members are shown under Mg in the column and they are calcium, strontium and rubidium.

Number of electrons in an tom is equal to the number of protons and this is called the atomic number. The atomic number o potassium is 19 and it have 19 electrons and protons.

Number of electrons = mass number-number of protons

= 39 -19 =20.

Hence, potassium (K) have 19 electrons and protons and 20 neutrons.

To find more about potassium, refer the link below:

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Part 1: Name two elements that have the same properties as magnesium (Mg). (4 points) Part 2: Determine the number of protons, electrons, and neutrons present in an atom of potassium (K). Explain how you determined your answer using complete sentences. (6 points)

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What is periodic groups?

Otras preguntas

Part 1: Name two elements that have the same properties as magnesium (Mg). (4 points)
Part 2: Determine the number of protons, electrons, and neutrons present in an atom of potassium (K). Explain how you determined your answer using complete sentences. (6 points)