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alexgriva [62]
3 years ago
12

Name the element that has atom with 4 proton in the nucleus

Chemistry
2 answers:
QveST [7]3 years ago
6 0
The element with 4 protons in the nucleus in Beryllium.
Eduardwww [97]3 years ago
5 0

Answer:

beryllium atom

Explanation:

An atom with two protons is always a helium atom. If scientists count four protons in an atom, they know it's a beryllium atom.

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Rank the elements from smallest to largest electronegativitu (smallest at top)
Lorico [155]
Ne is the smallest
B is the biggest
It goes (smallest to largest) : Ne, F,C,B
8 0
3 years ago
Most marble is composed primarily of
KatRina [158]

Answer:

It is composed primarily of the mineral calcite (CaCO3) and usually contains other minerals, such as clay minerals, micas, quartz, pyrite, iron oxides, and graphite.

Explanation:

Marble can be otherwise called metamorphic rock which is formed as a result of heat application on limestone and pressure of metamorphism. It is composed primarily of the mineral calcite (CaCO3) and usually contains other minerals, such as clay minerals, micas, quartz, pyrite, iron oxides, and graphite.

8 0
3 years ago
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Increasing the temperature increases the vaporization rate of a liquid because the excess energy is used to break covalent bonds
igor_vitrenko [27]

Answer:

False

Explanation:

False.  The molecules of liquid are hold in the liquid state due to intermolecular forces or Van de Waals forces , without affecting the molecule itself and its atomic bonds (covalent bonds).  When the temperature increases the kinetic energy of the molecules is higher , therefore they have more possibilities to escape from the attractive intermolecular forces and go to the gas state.

Note however that this is caused because the intermolecular forces are really weak compared to covalent bonds, therefore is easier to break the first one first and go to the gas state before any covalent bond breaks ( if it happens).

A temperature increase can increase vaporisation rate if any reaction is triggered that decomposes the liquid into more volatile compounds , but nevertheless, this effect is generally insignificant compared with the effect that temperature has in vaporisation due to Van der Waals forces.

4 0
3 years ago
What feature forms on the ocean floor at a divergent plate boundary where two pieces of oceanic crust are moving away from each
solong [7]

Answer:

volcanos i think

Explanation:

learned it in 6th grade

6 0
2 years ago
Perform the indicated conversion: 1.345 kcal =
Novay_Z [31]

Answer:

Use x calc

Explanation:

4 0
3 years ago
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