Explanation

• Strontium has the largest metallic radius with a value of 215 pm (picometers).
• This is due to its position in the periodic table, as it is a heavy alkaline earth metal with a large atomic radius.

Here are the atomic radii of the elements you've listed:

• Strontium (Sr): 215 pm
• Calcium (Ca): 197 pm
• Magnesium (Mg): 160 pm
• Beryllium (Be): 125 pm

Explanation

• The factorial operation is only defined for non-negative integers, so it is not possible to compute the factorial of a negative integer. Therefore, the factorial of a negative integer does not exist.

Explanation

Explanation

• The phrase "despite his best efforts" indicates that someone tried very hard to do something, but ultimately failed.
• In this case, the person tried to conceal their anger, but was unable to do so, and people still knew that they were annoyed.

Explanation

• Carbonic anhydrase is a enzyme that catalyzes the conversion of carbon dioxide and water into carbonic acid, and it is considered one of the most efficient enzymes known, with a rate enhancement of up to 10^6 (1 million) times compared to the uncatalyzed reaction.
• Carbonic anhydrase is an excellent example of an enzyme that has evolved to optimize its catalytic activity, and its active site is specifically designed to bind substrates and facilitate the reaction.

Explanation

• Cell signaling refers to the process by which cells communicate with each other and respond to their environment. It involves the transmission and reception of signals, which can occur through both intercellular and intracellular pathways.
• Intercellular signaling refers to the communication between different cells, where signals are transmitted through the extracellular space, such as through hormones, neurotransmitters, or other signaling molecules.
• Intracellular signaling refers to the communication within a cell, where signals are transmitted through various signaling pathways, such as protein-protein interactions, phosphorylation cascades, and gene regulation.

Explanation

• The function f is defined as f(a) = 1, f(b) = 1, and f(c) = 1.
• This means that every element in the domain (A) is mapped to the same element (1) in the codomain (B).
• This is a characteristic of a constant function, which is a function that always returns the same output value regardless of the input.

Explanation

Ludwig Boltzmann's ideas were not widely accepted during his time, which led to feelings of disillusionment and depression, ultimately resulting in him taking his own life.

Explanation

The formula =5 + 2 * 3 follows the order of operations (PEMDAS):

• Multiply 2 and 3: 2 * 3 = 6
• Add 5 to the result: 5 + 6 = 11

Explanation

The type of gas utilized in refrigerators to chill water is Tetrafluoroethane, also known as R-134a or HFC-134a.