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Veronika [31]
3 years ago
10

The periodic table is organized by

Chemistry
1 answer:
N76 [4]3 years ago
7 0
C, atomic number
HOPE THIS HELPS! have a good day
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What is an ionic bond in an electron?
Igoryamba
Its the complete transfer of valence electrons between atoms 
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2 years ago
The formula ca(no3)2 tells us that one formula unit of this compound is composed of ________ calcium atoms, ________ nitrogen at
ad-work [718]

Answer:- The formula Ca(NO_3)_2 tells us that one formula unit of this compound is composed of one calcium atom, two nitrogen atoms, and six oxygen atoms.

Explanations:- Subscripts tell us about the number of atoms of the element for which they are used. For example, here the subscript of Ca is one, it means there is one calcium atom in the given one formula unit.

When we have subscripts inside and outside the parenthesis then they are multiplied and the outside subscript is considered for all the atoms present inside the parenthesis.

Here, for the given chemical formula, the subscript of N is 1 and the subscript present outside is 2. So, 1 x 2 = 2 and for oxygen, 3 x 2 = 6

So, we have one calcium atom, two nitrogen atoms and six oxygen atoms for one formula unit of given compound.

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3 years ago
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2 years ago
A mole of cu atoms has the same number of atoms as a mole of he atoms. true false
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True. A mole is a standard unit of measurement. It's like that riddle; "What's heavier, a pound of bricks or a pound of feathers? Neither- a pound is a pound no matter what it's made of."
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Silicon (si) has two electrons in its outer p orbitals.

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