They are good conductors of electricity
they have a react vigorously with water
reactivity increases down the group
The 1 one and the last one
Ionization energy of atoms decrease as we move down a column on the periodic table.
Answer: Ionization energy
<u>Explanation:
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The periodic table consists of elements arranged in rows (periods) and columns (groups). The arrangement of elements in a column are made based on the increasing order of atomic radii from top to bottom of column.
As the atomic radii increase in group from top to bottom, the number of electrons increase along the group lead to shielding effect. Since the count of valence electrons are same for all elements in a group, the effective nuclear charges also same.
But the increase in the atomic number lead to shielding and increase in electrons occupied in farther shells from nucleus. This leads to deduce ionisation energy when move down a group.
12 electrons
Explanation:
Atomic designation of magnesium:
²⁵₁₂Mg
Magnesium is group II element on the periodic table with 12 electrons.
The periodic table provides an arrangement of elements based on their atomic numbers.
The atomic number of Mg is 12...........
The atomic number of an element is the same as the number of protons i.e positively charged particles.
In a neutral atom, the number of protons is equal to the number of electrons in them.
Learn more:
Atomic number brainly.com/question/2057656
#learnwithBrainly
Answer:
Soil contains minerals such as Iron, Zinc, Nitrogen compounds, etc. that are all essential to sustaining life. It also holds water and makes it available for plants to use. Soil also contains ores from which we can extract metals such as iron, copper, gold, and aluminum.
(Hope this helps) Sky
