2 years ago

What is the electron configuration of the element in period 3, group 6A?

Chemistry

2 answers:

Sholpan [36]2 years ago

8 0

the answer is -------s [Ne] 3s2 3p4

yulyashka [42]2 years ago

3 0

The electron configuration of the element in period 3, group 6A is [Ne]3s-2 3p-4.

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Determine the mass in grams of 4.69 x 1021 atoms of barium. (The

Virty [35]

Answer:

1.07 g Ba

Explanation:

Hello there!

In this case, according to the definition of the Avogadro's number and the molar mass, it is possible to say that 6.022x10^{23} atoms of barium equal one mole, and at the same time, 1 mole equals 137.327 grams of this element; thus, it is possible to say that 6.022x10^{23} atoms of barium have a mass of 137.327 grams; therefore, it i possible for us to calculate the required mass in grams as shown below:

$4.69x10^{21}atoms*\frac{137.327gBa}{6.022x10^{23} atoms} \\\\=1.07gBa$