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Can an element have 3 atoms?

Can an element have 3 atoms?

Molecules of compounds have atoms of two or more different elements. For example, water (H2O) has three atoms, two hydrogen (H) atoms and one oxygen (O) atom.

What is the atomic mass of cr3+?


What are the 3 atoms?

Atoms are composed of three main subatomic particles: protons, neutrons, and electrons.

What element has 4shells?


Atomic Number Element Energy Levels or “shells”
4 Beryllium (Be) 2
5 Boron (B) 3
6 Carbon (C) 4
7 Nitrogen (N) 5

Which element has 2 5 electrons per shell?

List of elements with electrons per shell

Z Element No. of electrons/shell
5 Boron 2, 3
6 Carbon 2, 4
7 Nitrogen 2, 5
8 Oxygen 2, 6

What is an electron shell diagram?

An electron shell is the outside part of an atom around the atomic nucleus. It is a group of atomic orbitals with the same value of the principal quantum number n. Electron shells have one or more electron subshells, or sublevels.

What is SPDF rule?

These subshells are called as s, p, d, or f. The s-subshell can fit 2 electrons, p-subshell can fit a maximum of 6 electrons, d-subshell can fit a maximum of 10 electrons, and f-subshell can fit a maximum of 14 electrons. The first shell has only an s orbital, so its called as 1s.

What is 1s 2s 2p?

For example, the electron configuration of the neon atom is 1s2 2s2 2p6, meaning that the 1s, 2s and 2p subshells are occupied by 2, 2 and 6 electrons respectively. Electronic configurations describe each electron as moving independently in an orbital, in an average field created by all other orbitals.

What is 1s 2s 2p 3s 3p?

1s 2s 2p 3s 3p represents the electron orbital energy levels.

Which element has the electron configuration of 1s 2 2s 2 2p 6 3s 2 3p 4?

Element Atomic number Electron configuration
silicon 14 1s22s22p63s23p2
phosphorus 15 1s22s22p63s23p3
sulfur 16 1s22s22p63s23p4
chlorine 17 1s22s22p63s23p5

What does a 2s orbital look like?

The 2 s and 2 p orbitals differ in shape, number, and energy. A 2 s orbital is spherical, and there is only one of them. A 2 p orbital is dumbbell-shaped, and there are three of them oriented on the x, y, and z axes. The 2 p orbitals have higher energy than the 2 s orbital.

Why are there 2 orbitals?

Two of them will be found in the 1s orbital close to the nucleus. The next two will go into the 2s orbital. The remaining ones will be in two separate 2p orbitals. This is because the p orbitals all have the same energy and the electrons prefer to be on their own if that’s the case.

What is difference between 1s and 2s orbital?

1s orbital is the closest orbital to the nucleus. 2s orbital is the second closest orbital to the nucleus. Energy of 1s orbital is lower than that of 2s orbital.

Does 2s or 2p have more energy?

2p has higher energy level because the negatively charged electron experiences less of an effective nuclear charge than the 2s electron. Penetration is how well the outer electrons are shielded from the nucleus by the core electrons.

Which has more energy 2s or 3s?

Since the two values are found to be same, the higher energy level has to be determined by comparing their principal quantum number. So clearly 3s has higher energy.

Does 1s have more energy than 2s?

An electron in a 1s orbital is of lower energy than one in a 2s orbital because it spends more of its time close to the atomic nucleus.

Do 2s and 3s have the same shape?

The contour or boundary surface representations of the 1s, 2s, and 3s orbitals are shown in Figure 6.21. They have the same shape, but they differ in size. Although the details of how the electron density varies within the surface are lost in these representations, this is not a serious disadvantage.

Which orbital is larger 2s or 3s?

The 3s orbital is larger (the electron is farther from the nucleus on average) than the 2s orbital.

What is the L quantum number?

Angular Momentum Quantum Number (l) The angular momentum quantum number, signified as (l), describes the general shape or region an electron occupies—its orbital shape. The value of l depends on the value of the principle quantum number n. The angular momentum quantum number can have positive values of zero to (n − 1).

What does 3s orbital look like?

A 3s orbital is even larger, and it has three nodes. Not all electrons inhabit s orbitals. However, at the second level, there are also orbitals called 2p orbitals in addition to the 2s orbital. Unlike an s orbital, a p orbital points in a particular direction.

What is the s orbital shape?


Why is there 3 p orbitals?

Not only hydrogen atom, but in all the atoms there are 3 p orbitals in any energy state because p orbital has azimuthal quantum number 1, therefore it has 3 orbitals px,py and pz with magnetic quantum numbers -1,0,1.

What does the S orbital look like?

The letter “s” indicates the shape of the orbital: s orbitals are spherically symmetric around the nucleus—​they look like hollow balls made of chunky material with the nucleus at the center. The orbital shown above is a 2s orbital.