All categories

3 years ago

Write electron configurations for Gallium, Ga (Z=31), and show the total valence electrons

Chemistry

1 answer:

ivann1987 [24]3 years ago

3 0

Answer: The electronic configuration of gallium is written below and number of valence electrons is 3.

Explanation:

Electronic configuration is defined as the representation of electrons around the nucleus of an atom.

Number of electrons in an atom is determined by the atomic number of that atom.

Valence electrons are defined as the electrons present in the outermost shell of an atom.

We are given:

An element Gallium having atomic number as 31.

Number of electrons = 31

Electronic configuration of Gallium is: $(Z=31):1s^22s^22p^63s^23p^64s^23d^{10}4p^1$

This element has 3 electrons in its outermost shell. So, the number of valence electrons is 3

Hence, the electronic configuration of gallium is written below and number of valence electrons is 3.

You might be interested in

Identifying compounds Caffeine is the most widely used psychoactive drug in the world and is found in coffee beans, tea leaves,

Marina CMI [18]

Answer:

Matter

Compound

Explanation:

Caffeine is NOT an Element, because it is formed by different elements (C, H, N, and O).

Caffeine is NOT an Isotope, because this only applies to elements with the same atomic number but different mass number.

Caffeine is Matter because it has mass and occupies space by having volume.

Caffeine is a Compound because it has a formula with a definite constant composition of different elements.

4 0

2 years ago

HELP ASAP PLZZZZZZZZ

mash [69]

Answer:

ans : C

..............

8 0

2 years ago

what kind of change occurs when sodium and chlorine combine ? Describe the matter before and after the change

DaniilM [7]

Sodium is a silver-colored metal which is soft enough to cut with a knife. It is an extremely reactive metal, and is always found naturally in ionic compounds, not in its pure metallic form. Pure sodium metal reacts violently (and sometimes explosively) with water, producing sodium hydroxide, hydrogen gas, and heat:

Chlorine is a poisonous, yellow-green gas, with a very sharp odor, a

Chemical change happen cuz these 2 elements will combine to form a new compound which’s NaCl ( table salt )

5 0

3 years ago

Draw an ether that contains exactly five carbon atoms and only single bonds

Eddi Din [679]

Answer:

H3CH2COCH2CH2CH3

Ether:

Ether are organic compounds that contain ether functional group , in which oxygen atom is connected with two alkyl or aryl group.

They have general formula as follow

R---O---R or R'---O----R or R'---O---R'

while R = Alkyl

R' = Aryl

8 0

2 years ago

What is the ph of a buffer prepared by adding 0.809 mol of the weak acid ha to 0.608 mol of naa in 2.00 l of solution? The disso

Anarel [89]

The pH of the buffer is 6.1236.

Explanation:

The strength of any acid solution can be obtained by determining their pH. Even the buffer solution strength of the weak acid can be determined using pH. As the dissociation constant is given, we can determine the pKa value as the negative log of dissociation constant value.

$pKa=-log[H] = - log [ 5.66 * 10^{-7}]\\ \\pka = 7 - log (5.66)=7-0.753=6.247\\\\pka = 6.247$