What's the feedback mechanism for diabetes

Which element is most likely to replace hydrogen in a displacement reaction?

LUCKY_DIMON [66]

Answer: The correct option is (D) lithium (Li).

Explanation: Hydrogen is the element which belong to period 1. The atomic number of hydrogen is, 1

The electronic configuration of hydrogen is,

The number of valence electrons present in hydrogen is, 1.

(A) Helium is the element which belong to period 1. The atomic number of helium is, 2

The electronic configuration of helium is,

The number of valence electrons present in helium is, 2.

(B) Oxygen is the element which belong to period 2. The atomic number of oxygen is, 8

The electronic configuration of oxygen is,

The number of valence electrons present in oxygen is, 6.

(C) Nitrogen is the element which belong to period 2. The atomic number of nitrogen is, 7

The electronic configuration of nitrogen is,

The number of valence electrons present in nitrogen is, 5.

(D) Lithium is the element which belong to period 2. The atomic number of lithium is, 3

The electronic configuration of lithium is,

The number of valence electrons present in lithium is, 1.

From this we conclude that the lithium element has the same number of valence electrons as hydrogen.

Hence, the correct option is (D) lithium (Li).

3 0

3 years ago

Your uncle has kidney disease and his doctor recommends dialysis. he opts for treatment he can do at home. what did he choose? y

aleksley [76]

If the doctor recommends dialysis for someone who has kidney disease and he goes for a home-treatment option, he most likely chose hemodialysis. Home hemodialysis (HHD) is the option that offers freedom to be treated outside of the dialysis center.

5 0

3 years ago

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Mention the function of oveary ,ovduct and utterus in the female reproductive system. how essential materials are supplied for t

harkovskaia [24]

Answer:

- The ovary is the female organ that produces the female gametes

- The oviducts are tubes that extend from the ovaries to the uterus

- The uterus is an organ that acts to nourish and house a fertilized egg until the fetus is delivered

- Materials are supplied by the mother's placenta

Explanation:

The ovaries are the female gonads that function to produce and release female gametes (i.e., oocytes) into the reproductive tract. These organs are also in charge of producing female hormones (e.g. progesterone). The oviducts, also known as fallopian tubes, are a pair of tubes that extend from each ovary to the top of the uterus. The uterus is a thick muscular organ of the female reproductive system that nourishes and houses the embryo and fetus. Finally, materials such as oxygen and nutrients pass from the mother's bloodstream through the placenta which is connected to the fetus by the umbilical cord.

6 0

3 years ago

What is the maintenance of a fairly constant internal environment

Sladkaya [172]

Answer: Maintainance of constant internal environment is carried out in a process called Homeostasis.

Explanation:

Maintainance can of several types such as pH, temperature, and other substances such as Concentration of Ammonia in body. These all should maintain at constantly for stability in body. The maintenance of temperature is called thermo regulation.

5 0

3 years ago

1.

Elan Coil [88]

1) full, 2) new, 3) gibbous

7 0

4 years ago

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