The element Y has 13 electrons. What is the electronic configuration of

Chemistry

1 answer:

enyata [817]3 years ago

5 0

Answer:

0,2,8,3

Explanation:

k shell takes 2,L shell takes 8 and M shell takes the remaining which is 3

You might be interested in

More accurate dates of the reigns of ancient Egyptian pharaohs have been determined recently using plants

ArbitrLikvidat [17]

King Tut's reign came to an end at 3350 years ago

<h3>Further explanation</h3>

Carbon-14 is a radioactive isotope that can decay. This isotope can be used to determine how long ago an organism died by knowing the ratio from 12C to 14C

Can be formulated

$\tt Nt=No\dfrac{1}{2}^{t/t1/2}$

Or we can use :

$t=-\frac{1}{\lambda }\text{ln}\left(\frac{{N}_{t}}{{N}_{0}}\right)\longrightarrow t=-\frac{1}{\lambda }\text{ln}\left(\frac{{\text{Rate}}_{t}}{{\text{Rate}}_{0}}\right)$

The half-life of C-14, 5730 years, so the decay constant :

$\tt \lambda =\dfrac{\text{ln 2}}{{t}_{1\text{/}2}}=\dfrac{0.693}{\text{5730 y}}=1.21\times {10}^{-4}}$

Assume the initial C-14 activity was 13.6 disintegrations/min/g of C

$\tt t=-\dfrac{1}{\lambda }\text{ln}\left(\dfrac{{\text{Rate}}_{t}}{{\text{Rate}}_{0}}\right)=-\dfrac{1}{1.21\times {10}^{-4}}\text{ln}\left(\dfrac{9.07}{13.6}\right)=\text{3348}\approx 3350~y$

7 0

3 years ago

What is found only in an experimental investigation?

andreev551 [17]

Experimental investigations<span> involve a process in which a "fair test" is designed and variables are actively manipulated, controlled, and measured in an effort to gather evidence to support or refute a </span>causal relationship<span>. Experimental investigations have a control group which does not receive any treatment. A classic example is "What is the effect of light color on plant growth?" In this experiment, the variable color of light is changed by the student. The student may compare red light to green light to natural light.

hope i helped ^_^</span>

4 0

3 years ago

molecules that resemble fats but contain phosphate functional groups are called: a. steroids. b. polypeptides. c. phospholipids.

Rom4ik [11]

The answer is C. Phospholipids because Lipids mean "Fat"

8 0

3 years ago

Read 2 more answers

Explain in your own words what the conservation of mass means?pls help

grigory [225]

Answer:

the conservation of mass means matter can be created or destroyed, it only changes forms