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Travka [436]
2 years ago
6

Which of the following elements is the smallest? A. Be B. Ca C. Sr D. Mg

Chemistry
1 answer:
alexandr402 [8]2 years ago
7 0

Answer:

Option A. (Be)

Explanation:

Beryllium is used in alloys with copper or nickel to make gyroscopes, springs, electrical contacts, spot-welding electrodes and non-sparking tools.

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Name the type of reaction involved in the conversation of ethanol to Ethan​
Anestetic [448]
The conversion of ethanol to ethanoic acid is an oxidation reaction.
3 0
2 years ago
Which of the following sets are isoelectronic (i.e., have the same number of electrons)? i. Br-, Kr, Sr2+ ii. C, N-, O2- iii. Mg
il63 [147K]

Answer:

ii. C,\ N^-,\ O^{2-}

Explanation:

Isoelectric species are the species which have same number of electrons.

From the given options:-

C,\ N^-,\ O^{2-} are the isoelectric species.

All the three species have same number of electrons which is equal to 6.

Carbon has 6 electrons.

N^- has 6 electrons.

O^{2-} has 6 electrons.

8 0
3 years ago
Describe the charges of the particles in the atom and how charge is distributed within an atom.
trapecia [35]
There are MANY subatomic particles in an atom.
But the three most important ones are
The electron which has a negative charge.
The proton having a positive charge.
And the neutron which is neutral or which has no charge at all.
The protons and neutrons club together and form the inner, heavy part of the atom which is positively charges because of the protons known as the nucleus.
And electrons remain farther away in all reality and revolve around the inner positive nucleus.
Trying its best to make the whole atom neutral!
8 0
3 years ago
PLEASE HELP QUICK AS POSSIBLE!!!!
GalinKa [24]

Answer:

4180J

Explanation:

(25.0g)(4.184J/g°C)(75°C-35.0°C)

(25.0g)(40.0°C)(4.184J/g°C)

(1.00*10³g°C)(4.184J/g°C) = 4184J

use sig figs:

4180J

8 0
3 years ago
Magma that is rich in feldspar and silica is called?​
weeeeeb [17]

Answer:

<h3>magma that is rich in feldspar and silica is called STRATOVOLCANO.</h3>
3 0
3 years ago
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