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Alja [10]
4 years ago
15

Why is the chemical symbol for calcium ca

Chemistry
1 answer:
Assoli18 [71]4 years ago
6 0
You are right, it's CA Calcium, 40.08, Group 2 and Row 4.
You might be interested in
What is the mass of 8.0 x 10^26 UF6 molecules?
gulaghasi [49]
First, find the number of moles of UF6
Avagadro's number = 6.023 x 10^23

Number of moles = 8.0 x 10^26 / Avagadro's number = 8.0 x 10^26 / 6.023 x 10^23 = 1.328 x 10³ moles

Molecular weight of UF6 = Molecular weight of U (238.02891) + Molecular weight of F6 (6 x 18.9984032) = 238.02891 + 113.9904192 = 352.0193292 g/mol

Therefore mass of 8.0 x 10^26 UF6 molecules = 352.0193292 g/mol x 1.328 x 10³ moles = 467.481669 x 10³ grams




3 0
3 years ago
The average kinetic energy of an object or material is its thermal energy. True or false
Montano1993 [528]

Answer:

false

Explanation:

6 0
2 years ago
Half of the first 18 elements have an odd number of electrons, and half have an even number. Show why atoms of these elements ar
asambeis [7]

Answer:

Diamagnetism in atom occurs whenever two electrons in an orbital paired equalises with a total spin of 0.

Paramagnetism in atom occurs whenever at least one orbital of an atom has a net spin of electron. That is a paramagnetic electron is just an unpaired electron in the atom.

Here is a twist even if an atom have ten diamagnetic electrons, the presence of at least one paramagnetic electron, makes it to be considered as a paramagnetic atom.

Simply put paramagnetic elements are one that have unpaired electrons, whereas diamagnetic elements do have paired electron.

The atomic orbital and radius increases by gaining electron linearly so even electron numbered atoms are diamagnetic while the odd electron numbered atoms are paramagnetic.

Running through the first 18 elements one can observe that there is an alternative odd number of electrons and an even number proofing that that half of the first 18 elements shows paramagnetism and diamagnetism respectively.

Explanation:

3 0
3 years ago
How are ionic bonds formed?
lisov135 [29]

Answer:

D

Explanation:

It occurs when the outermost electrons are permanently transferred to another atom.

7 0
3 years ago
The volume of a sample of water is 2.5 milliliters (mL). The volume of this sample in liters (L) is
Masteriza [31]

Answer:

2.5 Times . 10–3 L.

Explanation:

1 L = 1000 mL

1 mL = 1×10⁻³ L

2.5 mL / 1000 = 2.5×10⁻³ L

2.5 mL . 1×10⁻³ = 2.5×10⁻³ L

8 0
3 years ago
Read 2 more answers
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