The answer to this question would be: alkaline earth metal
Alkali earth metal is the second column group of the periodic table. In this group, the element has 2 extra electrons in their outer cells. That is why most of this metal has 2+ charge.
Their neighbor is the alkali metal which was the first column of the periodic table. The name is similar so don't confused and mix them each other.
Answer:
A chemical reaction produces formaldehyde, with a chemical formula of CH2O. Carbon is in Group 4A, oxygen is in Group 6A, and hydrogen is in Group 1A on the periodic table. In one to two sentences, can you describe the bonds in a molecule of formaldehyde in terms of valence electrons?
Explanation:
Answer: b. Chromatography
Explanation:
Chromatography procedure will be used to separate the pigments in the ink.
To carry out this procedure, a small ink-dot is placed at the end of a filter paper. This ink-dotted end of the filter paper is then placed in a solvent.
As the solvent moves up the filter paper, it dissolves the ink mixture and spreads its component pigment across the paper.
Atomic masses increase when we go to the right from the left and when we go down the group
Hope this helps!
2.81x10 mol Fe2O3 4H2O
number of moles of rust = mass/molar mass
=65.2 kg x1000/1Kg x 1 mol Fe2O3 4H20/231.7493g
= 2.81x10 mol Fe,0, 4H2O
<h3>
What is moles of compound?</h3>
Avogadro's number (6.022 x 1023) of molecules (or formula units) make up one mole of a substance (ionic compound). The mass of 1 mole of a chemical is indicated by its molar mass. It provides you with the amount of grams per mole of a substance, to put it another way.
In essence, bond angles indicate that electrons dislike being close to one another. Negative ions are electrons. Negatives don't attract each other. Make a comparison now. A negative person is typically viewed as unpleasant or mean, and you don't want to interact with them.
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