studyeast studyeast

21-10-2018
Chemistry

contestada

Both of calciums electrons are in its innermost shell. Explain why.

Respuesta :

theresanunez theresanunez

29-10-2018

The atomic number of calcium is 20 which means it has 20 protons and as an atom (not an ion) it also has 20 electrons. These are in four energy levels (1 though 4) .

Answer Link

Otras preguntas

dentify a and b in the binomial expression (2x3 + 3y2)7.

write the expression in complete factored form. y^2(q-4)-c(q-4)

Which of the following is the best tool to measure the width of a chair? A. yardstick B. measuring tape C. ruler

In “Elegy Written in a Country Churchyard,” to whom do the following lines refer? Each in his narrow cell forever laid, The rude forefathers of the hamlet sle

a cyclist rides her bike at a rate of 10 meters per second. what is the rate in kilometers per hour? how many kilometers will the cyclist travel in 4 hours

Describe Confucian teachings on one’s role.

Enter the correct answer in the box. Consider the system of equations. 3x + 2y = 23 1/2x - y = 4 Rewrite the first equation in slope-intercept form to find a

Using the slope formula for the points (1, 5) and (2, -2), what would the denominator be? -2 - 5 -2 - 1 2 - 1 2 - 5

The curve the order pairs (0,10) and (1,5) and (2,2.5) can be represented by the function f(x)=10(0.5)x What is the multiplicative rate of change if the funct

please solve and explain..I need a teacher or a student who is really good at 11th grade math..