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Chemistry

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Aida Medhurst

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Cards in this guide (18)
Which of these elements has the smallest atomic radius

The answer choices for this question wasn't provided. Oxygen has the smallest atomic radius. The higher the electronegativity in an element makes the atomic radius smaller.

Name the following binary compound K2Cr2O7

Potassium Dichromate

What are hydrogen bonds why is that important

Hydrogen bonds occur in bonding many elements, or compunds.. without them, we would surely die.

How is the oxidation state of a transition metal determined from the chemical formula

The subscript of the second ion identifies the oxidation state of the transition metal

How is the name of the second element in a covalent molecule changed

The ending of the second element is changed to -ide

What best describes a bond formed between two unlike atoms

The type of bond is determined by the difference in electrongativity of atoms

Why are prefixes used in naming covalent compounds

The same atoms can combine in more than one ratio.

Which of the following is a covalent bond

No following, but look for the nonmetal to nonmetal bond.

What shape does the molecule ClF2 plus have

The ClF2+ ion is bent. (The VSEPR AXE notation is AX2E2 ). The ClF2- ion (AX2E3) is linear.

What elements have the highest and lowest ionization energy

Helium has the highest first ionization energy and francium has the lowest first ionization energy.

Which 2 atoms form a covalent bond

If the electronegativity difference between two atoms is below 1.7, then the two atoms form covalent bond.

What does it mean if a chemical symbol in a chemical formula has no subscript

If a symbol in a chemical formula has no subscript it means only one atom of that element is present in the compound.

What is the best definition of a physical change

Answer this question… Which of the following is the best definition of a physical change?

What is the correct electron configuration for an element with 5 electrons in the 3d energy sublevel

1s22s22p63s23p64s23d5

Will two oxygen atoms form an ionic bond

Does two oxygen atoms for an ionic bond

Which of the following has the smallest radius is K plus Rb Rb plus K

K+

When would dipole dipole be significant

Dipole-dipole forces play a significant role when a molecule is polar.

Which of the following could be considered a benefit of modern farming techniques

The food we eat is fresher because it is treated with preservatives.

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