2 years ago

What atom has 5 neutrons 4 protons and 2 electrons

Chemistry

1 answer:

Vilka [71]2 years ago

6 0

the atom that has these characteritics is called beryllium nucleus

You might be interested in

A sample of He gas (3.0 L) at 5.6 atm and 25°C was combined with 4.5 L of Ne gas at 3.6 atm and 25°C at constant temperature in

LenKa [72]

Answer:

$P=3.7atm$

Explanation:

Hello,

In this case, it is possible to determine the pressures of both helium and neon as shown below:

$n_{He}=\frac{P_{He}V_{He}}{RT}=\frac{5.6atm*3.0L}{0.082\frac{atm*L}{mol*K}*298.15K} =0.688molHe\\\\n_{Ne}=\frac{P_{Ne}V_{Ne}}{RT}=\frac{3.6atm*4.5L}{0.082\frac{atm*L}{mol*K}*298.15K}=0.663molNe$

Now, one considers the total moles (addition between both neon's and helium's moles) and the total volume to compute the final pressure as shown below:

$P=\frac{n_TRT}{V_T} =\frac{(0.688+0.663)mol*0.082\frac{atm*L}{mol*K}*298.15K}{9.0L}=3.7atm$

Best regards.

8 0

2 years ago

The element in period 3 with the most metallic character is A sodium

Gekata [30.6K]

A. Sodium is correct.

Sodium is an alkali metal.
Aluminum is a post-transitional metal- still a metal but it’s character is not as metallic as sodium.
Silicon is a metalloid- it has characteristics from both the metals and the non-metals.
Phosphorous is a non-metal.

8 0

3 years ago

The maximum number of orbits in an atom is _____. -three -five -seven -nine

marissa [1.9K]

Seven
Elements do not contain more than 7 electron shells.

4 0

2 years ago

Read 2 more answers

Question 5 of 10

pychu [463]

The answer is D. S2O6

4 0