Unclear

School

I set my foot towards the classroom, arriving in front of the corridor someone bumped into me.

"Sorry." I said and immediately woke him up.

"Who are you? the new student?" said the girl who hit me earlier, even though she hit me, but I apologized first, because I think apologizing will never degrade you, he said, I don't want to be less careful either.

"I'm new to this school, my name is Micah, Mikhayla Andrean." I reached out with my hand, but with her tongue she brushed my hand away.

"I don't need to know your name!" then he walked away from me.

I casually walked into the classroom and sat in my chair taking out a number of books and reading them for a while before the teacher started the lesson.

"Hi, Micah? how are you, sorry I haven't been able to see you, anyway I don't know your HP number or where you live." This is Cantika, she's a friend I've only known for a few days but she's the closest one to me.

"It's okay, anyway I'm fine², thanks for worrying about me."

Then he pulled out some notes about a few days ago.

"Mikha, maybe you need this, read this material 2 days ago."

"Thank you." And we smile at each other.

Material after material delivered arrived at the time of the quiz.

Check out the electron configuration below!

Y: [Ne]3s23p5

From the above electron configuration, it can be concluded that element Y is in....

A. period 3, VIIA group

B. period 3, VIIB group

C. period 3, VA group

D. period 5, group IIIA

E. period 5, group IIIB

"Can anyone answer here?"

ask the teacher who is teaching my class.

I glanced right and left, everything was still silent and I raised my hand.

"Yes, what's your name? you want to answer?"

"My name is Mikhayla sir, yes I will answer."

"what's your answer?"

"Please give me an explanation.

then Micah stood in his place and explained about the answer.

Answer : A

Discussion :

Groups can be determined by looking at the valence electrons of an element.

The valence electron of element Y is 3s2 3p5. The valence electrons of element Y are 7 electrons. Since the last orbitals are s and p orbitals, it can be concluded that element Y is in group VIIA.

The period can be determined by looking at the largest shell (n) in its electron configuration. Element Y has the largest skin n \= 3, so it is located in the period 3

"Yes, Micah you're right, I'll finish the quiz for today, for Micah, you won't get any more assignments from me, I say good morning."

Then another hour of study passed very quickly, the break time arrived, me and Cantika, still in class to eat the food we brought from home.

"Cantika, try this my aunt put it for me." said I then while giving meat with a spoon to Cantika's lunchbox.

"So your aunt's good at cooking, huh? it tastes really good, and the contents of your lunchbox are quite complex."

"Yes, my aunt is very understanding other than mother only she cares about me."

"Oh yes, your mother is a career woman, until supplies are made your aunt?"

"No," while chewing my food.

"My mother is dead."

"Sorry Micah, I..."

"It's okay, I can take it all in."

"When is your mother gone?"

"A few months ago."

"You must have a hard time accepting everything."

I drink water in my bottle.

"At first it was very difficult, even I almost committed suicide, but I think accepting everything and living my life was a good choice." My eyes began to let out a mist, but I held on.

"Then where's your dad? did your move here include the cause of all this."

"My father got married again, exactly one month after my mother died, I moved because I refused all the gifts from my father, I ran away from his house, without bringing a penny of his gift."

"Mikha, stay strong I'm sure you're smart and tough, passionate..." And we laughed together to take off the burden that I have, I'm happy to be friends with you Cantika, hopefully this can last a long time.