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4 years ago

Hydrogen possesses fewer valence electrons than lithium.

Chemistry

2 answers:

VladimirAG [237]4 years ago

8 0

Answer:

False, True

Explanation:

False

The atomic number of H and Li are 1 and 3 respectively. Atomic number is equal to the number of protons which is eqaul to the number of electrons. The electron configuration of H and Li are as follows:

H = 1s¹

Li = 1s² 2s¹

The valence electrons of both H and Li are 1.

True

Al has 3 valance electrons. Hence the Lewis dot structure for aluminum includes the symbol, "Al," and a total of three dots around the symbol.

True

Electron affinity is the amount of of energy released or absorbed when an electron is added to a neutral gaseous atom to form a negatively charged ion.

False

The name of the ion P³⁻ is phosphide ion.

Harlamova29_29 [7]4 years ago

4 0

Hydrogen possesses fewer valence electrons than lithium.

Answer: False.

Explanation: H and Li are both in Group 1. They both have one valence electron.

The Lewis dot structure for aluminum includes the symbol "Al" and a total of three dots around the symbol.

Answer: True.

Explanation: The Lewis structure for Al is ·Al:

An atom's electron affinity value indicates how favorable it is for the atom to form a negatively charged ion.

Answer: True.

The electron affinity is the energy absorbed or released when a neutral atom gains an electron. The more energy that is released, the more stable the ion,

The name of the ion P³⁻ is phosphoride ion.

Answer: False

Explanation: The name of P³⁻ is phosphide. The stem name of phosphorus in binary ionic compounds is “phosph-.”

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Serjik [45]

Fluorine (F) would be least likely to form a cation out of potassium, fluorine, chlorine, and nitrogen.

A cation is a positively charged atom (or molecule) that has lost electrons (or electrons).
The tendency for electropositive elements to lose electrons and produce cations is greater. On the left side of the periodic table, these are often metals.
Going down a group increases electropositivity, or the propensity to lose electrons and generate cations. and decreases across a period. In the given examples:
Potassium, K is an alkali metal and will lose electrons readily to form a cation.
Nitrogen (N), Fluorine (F), and chlorine (Cl) are all nonmetals that prefer to accept electrons and form anions instead. F is the most electronegative i.e. it will gain electrons and form F- rather than F+.

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The fire wood sends heat out in all directions. Warmed smoke filed air goes up the chimney. The outside of the metal fireplace g

maxonik [38]

Answer:

Convection

Explanation:

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3 years ago

What basic law of chemical reactions do nuclear reactions break

zhuklara [117]

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3 years ago

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Komok [63]

Answer:

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3 years ago

Why can't polyatomic ions ever stand alone?

natta225 [31]

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