What are the electrons for calcium

Chemistry

1 answer:

IRINA_888 [86]4 years ago

5 0

The traditional calcium atom has twenty protons and twenty electrons making it neutral.

The calcium in the pic is a calcium ion so the number of protons and electrons are not equivalent.

Since it's 2+ that means the ion is positively charged and for that to happen electrons are away.

So 20-2=18

There are 18 electrons

You might be interested in

Elements riddle: Without my next door neighbor, I wouldn’t be worth 6 cents. Who am I?

zalisa [80]

If I understand this right, the two elements are Nickel and Copper, elements 28 and 28, respectively. A nickel is worth 5 cents, and a penny, originally comprised of copper, is worth one - the total being six cents.

7 0

3 years ago

Which equivalence factor should you use to convert from 3.48 x 1018 atoms of magnesium (Mg) to moles of magnesium?

attashe74 [19]

You should divide by 6.02*10^23.

5 0

3 years ago

Calculate the amount of energy required to increase the temperature of 18.0 go vapor water from 275.0 degrees * C to 385 degrees

Archy [21]

Answer:

The amount of energy required to increase temperature 275°C to 385°C is ΔQ =3.95208kJ

Explanation:

Given :

The mass of the water vapour is 18 g
The initial temperature : 275°C
The final temperature : 385°C

According to the formula :

Δ $Q = m*s*$ Δ $T$

Where ,

Δ $Q$ is the heat supplied
$m$ is the mass of the substance (water vapour) = 18g
$s$ is the specific heat of the substance ( water vapour) = $1.996Jg^{-1}K^{-1}$
Δ $T$ is the change in temperature = $385-275=110K$