# What element has the electron configuration Kr 5s1 4d5?

## What element has the electron configuration Kr 5s1 4d5?

Explanation: And if Z=42 , the element is molybdenum , Mo .

Copper (Co)

## What element is 4s2 3d10 4p6?

A B
chromium 1s2 2s2 2p6 3s2 3p6 4s1 3d5 !
copper 1s2 2s2 2p6 3s2 3p6 4s1 3d 10 !
bromine 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p5
silver 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s1 4d10 !

## What is 1s2 2s2 2p6?

b. 1s2 2s2 2p6 This represents 2 electrons in the s subshell of the first energy level , 2 electrons in the s subshell of the second energy level and 6 electrons in the p subshell of the second energy level. This element has 10 total electrons.

## What element is the best represented by the electron configuration?

The answer must be neon because the number of electrons is 2 + 2 + 6 = 10. Neon has an atomic number of 10. Therefore, the answer is neon.

## What do you start electron configuration with?

The symbols used for writing the electron configuration start with the shell number (n) followed by the type of orbital and finally the superscript indicates how many electrons are in the orbital. For example: Looking at the periodic table, you can see that Oxygen has 8 electrons.

bromine

## How many electrons are in the 4th Shell?

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Shell Subshell Total Number of Electrons in Shell
1st Shell 1s 2
2nd Shell 2s, 2p 2 + 6 = 8
3rd Shell 3s, 3p, 3d 2 + 6 + 10 = 18
4th Shell 4s, 4p, 4d, 4f 2 + 6 + 10 + 14 = 32

## How do you write ground state configuration?

Basics. Electron configurations are written using the principal quantum number n, followed by the orbital (s, p, d, or f) with the total number of electrons written as a superscript. Example: 1s2 For writing ground state electron configurations, a few main steps should be followed.

## What is the ground state electron configuration for Zn?

Zinc atoms have 30 electrons and the shell structure is 2.8. 18.2. The ground state electron configuration of ground state gaseous neutral zinc is [Ar]. 3d10.

## Which is the ground state electron configuration for 24cr?

13.1. The ground state electron configuration of ground state gaseous neutral chromium is [Ar]. 3d5. 4s1 and the term symbol is 7S3.

## What is the full ground state electron configuration for selenium?

The ground state electron configuration of ground state gaseous neutral selenium is [Ar]. 3d10. 4s2. 4p4 and the term symbol is 3P2.

Argon

## What is the difference between electron configuration and noble gas notation?

An electron configuration is the sequence of electrons that are present in an atom. The key difference between noble gas configuration and electron configuration is that noble gas configuration has only electron pairs whereas an electron configuration can have both paired and unpaired electrons.

## What are 3 uses for selenium?

Selenium is used to make pigments for ceramics, paint and plastics. Selenium has both a photovoltaic action (converts light to electricity) and a photoconductive action (electrical resistance decreases with increased illumination). It is therefore useful in photocells, solar cells and photocopiers.

## How do you find the electron configuration of a noble gas?

A noble gas configuration of an atom consists of the elemental symbol of the last noble gas prior to that atom, followed by the configuration of the remaining electrons. So for sodium, we make the substitution of [Ne] for the 1s22s22p6 part of the configuration. Sodium’s noble gas configuration becomes [Ne]3s1.

two electrons

## Does Na+ have a noble gas configuration?

The first ten electrons of the sodium atom are the inner-shell electrons and the configuration of just those ten electrons is exactly the same as the configuration of the element neon (Z = 10)….Noble Gas Configurations.

Element Name Sodium Na 11 [Ne]3s1

## What is the correct electron configuration for Na+?

[Ne] 3s¹

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