Which of the diagrams is the correct model for the element beryllium?

Answer:

the second one is correct :)

Explanation:

beryllium has 4 protons, 5 neutrons, and 4 electrons

BRAINLIEST IF CORRECT (PLEASE HURRY)

Which two minerals can be scratched by a knife but not copper coin?

Chemists predict the geometry of molecules based on the repulsion of electron pairs. Molecules can be represented by the general formula AXY, where Y is the number of peripheral atoms. We would expect the geometric shape of a molecule represented by the formula AX3 to be

A) linear.

B) tetrahedral.

C) trigonal planar Eliminate

D) trigonal bipyramidal

Based on the article, how would you define a heat sink?
here is the article
https://www.sciencenewsforstudents.org/article/buildings-may-be-chasing-las-fog-away

What is the SI unit for weight? NO LINKS I will give brainliest
(and no its not kg)

The Koppen Classification System splits the world into 5 climate zones.

What was used to determine these 5 different zones?

There are 3 correct answers.

Vegetation

Temperature

Animal life

Precipitation

Water Quality

PLZ HELP! WILL GIVE BRAINLIEST, 5 STARS, AND A THANKS!!
~Read the article excerpt then respond to the question below.~
"Scientists make synthetic substances by arranging atoms and molecules in the lab. They use what they know about different types of atoms and molecules to arrange them and make the kinds of substances they want.
Synthetic medicines aren’t any different at the atomic level from the natural medicines found in the rainforest. After all, molecules are just molecules—whether they’re made in nature or in a lab, the same types of atoms arranged in the same ways always form the same molecules that behave in the same ways."

At the atomic level, are synthetic medicines different from natural medicines?
Explain your thinking.

(a) What human activity is responsible for the formation of smog and acid rain? (b) What kinds of harm does photochemical smog cause? (c) Do you think that photochemical smog levels are high during the winter or during the summer? Explain.

NO FILES OR I REPORT >:-((

Every organism requires a set of instructions that specifies its traits. Which statement BEST describes the hereditary information in a cell?
pls help
A gene, but not DNA, is passed on to the next generation.

Each chromosome contains a single gene.

Genes are located on the chromosomes.

A gene, but not a chromosome, is made of DNA.

Need help ASAP!!!!!!!!

We can drink water straight from the ocean without purifying it.



True

False

True or False?

Density of ocean water is not affected by salinity (salt content).

HElp i will give you brainliest

your alien friend from planet xenon is visiting and wants to learn how to breed pea plants you show your friend a recent batch of pea plants with purple flowers that you grew by crossing plants that had purple flowers with plants that had white flowers your friend is confused as to why your plants all have purple flowers how would you explain in the simplest way possible what happened