2 years ago

What element has the electron configuration below? * please help me

Chemistry

1 answer:

timofeeve [1]2 years ago

8 0

Answer:

Symbol Ar

Group 18

Electron configuration- 1s² 2s² 3p6 3s² 3p6

Explanation:

The 6 is small and will be placed in top but I don't have the option that's why I wrote like that

You might be interested in

[1] b) In a local election there were 8000 registered voters. Of these 3200 voted. What was the percentage that voted? [1] <

Alexandra [31]

Answer:

40% of registered voters voted

Explanation:

3200 out of 8000,

or :

3200 / 8000

= 0.4

0.4 x 100 = 40

40% of registered voters voted

4 0

1 year ago

The atomic number of lithium is 3. How many neutrons does an atom of lithium have if it is represented by the symbol shown below

Mademuasel [1]

If it is not an isotope then it has around 21 neutrons

5 0

3 years ago

There are the same number of atoms in a mole of calcium (Ca) than in a

zmey [24]

Answer:

True

Explanation:

A mole is defined as a certain amount of a unit. Such as atoms or molecules.

5 0

2 years ago

Help with chemistry please Which chemical reaction involves the most oxygen atoms?

Ratling [72]

H2O is A chemical reaction of the most oxygen atoms

3 0

3 years ago

Complete the sentences about heme. Some terms will not be used. The prosthetic group of hemoglobin and myoglobin is . The organi

nevsk [136]

Explanation:

Haemoglobin consists of heme unit which is comprised of an $Fe^{2+}$ and porphyrin ring. The ring has four pyrrole molecules which are linked to the iron ion. In oxyhaemoglobin, the iron has coordinates with four nitrogen atoms and one to the F8 histidine residue and the sixth one to the oxygen. In deoxyhaemoglobin, the ion is displaced out of the ring by 0.4 Å.

The prosthetic group of hemoglobin and myoglobin is - Heme

The organic ring component of heme is - Porphyrin

Under normal conditions, the central atom of heme is - $Fe^{2+}$

In deoxyhemoglobin , the central iron atom is displaced 0.4 Å out of the plane of the porphyrin ring system.

The central atom has six bonds: four to nitrogen atoms in the porphyrin, one to a histidine residue, and one to oxygen.

7 0

2 years ago