TessaBJ5511 TessaBJ5511

14-11-2017
Chemistry

contestada

How many valence electrons are in an atom of magnesium? (atomic number 12)?

Respuesta :

Kalahira Kalahira

23-11-2017

As magnesium has atomic number 12 it's electronic configuration is 2,8,2 in the K,L,M shells.Thus as we can see it has 2 electrons in the outermost shell hence, it has 2 valence electrons.

Answer Link

Otras preguntas

Can somebody help me with a introduction paragraph? Please.

What is a construction? A) a construction is a figure drawn using only a straightedge and a compass. B) a construction is represented by a flat surface that ext

A particle R moves with a velocity of 6 m/s due East and another particle S moves at 8 m/s due South. What is the magnitude of the velocity of Rw.r.t S? a 10 m/

Which equation represents the graph below?

hello i need help with french! thankyou

Solve for x: −2x − 4 > 8 x < −6 x > −6 x < −2 x > −2

i need somone to talk to pls

Marco wrote the expression (2x − 4y)2 = 4x2 − 16y2. Complete the explanation and correct his error. Marco may have confused a difference of the squares and the

Evaluate the extent to which the government has contributed to Social Grants

succinic acid has a simple formula of C2H3O2 and a molecular weight of 118 gram/mol. what is the molecular formula of succinic acidA) C4H6O4 B) C2H3O2C) C8H12O8