Số tài khoản này đúng không?

A natural word-by-word breakdown is:

• số = number
• tài khoản = account
• số tài khoản = account number
• này = this
• đúng = correct / right
• không? = a question marker here, making it mean something like or not?

So the structure is roughly:

• số tài khoản này = this account number
• đúng không? = is it correct?

In Vietnamese, demonstratives like này (this) usually come after the noun, not before it as in English.

So:

• số tài khoản này = this account number

Compare:

• cuốn sách này = this book
• người này = this person
• cái bàn này = this table

This is a very common word-order difference between English and Vietnamese.

đúng không? is a very common way to ask for confirmation. It works a lot like:

• right?
• correct?
• is that right?

So Số tài khoản này đúng không? is asking the listener to confirm whether the account number is correct.

You will see the same pattern in many sentences:

• Cái này đẹp đúng không? = This is pretty, right?
• Anh là giáo viên đúng không? = You’re a teacher, right?

It is one of the easiest and most common Vietnamese confirmation patterns to learn.

Not exactly, though they are related.

There are a few common ways to ask yes-no questions in Vietnamese.

1. Statement + không?

   • Số tài khoản này không?
   • This would sound incomplete or unnatural here.

2. Có ... không?

   • Số tài khoản này có đúng không?
   • This is also natural and slightly fuller.

3. Statement + đúng không?

   • Số tài khoản này đúng không?
   • This specifically asks for confirmation: This account number is correct, right?

So đúng không? is not just a generic question ending. It adds the idea of correctness and checking whether something is right.

Yes. Số tài khoản này có đúng không? is completely natural.

Both are common:

• Số tài khoản này đúng không?
• Số tài khoản này có đúng không?

The version with có can sound a little more explicitly like a yes-no question, but in everyday speech both are fine.

Vietnamese often does not need a verb equivalent to to be in sentences where English does.

English says:

• Is this account number correct?

Vietnamese can simply say:

• Số tài khoản này đúng không?

That is completely normal. Vietnamese often links the topic and description directly without adding a separate word for is.

It is a noun phrase made of two parts:

• số = number
• tài khoản = account

Together, số tài khoản means account number.

This is a very common Vietnamese pattern where one noun modifies another:

• số điện thoại = phone number
• thẻ ngân hàng = bank card
• mật khẩu tài khoản = account password

So although it is written as separate words, it functions together as one unit of meaning.

Yes, it is natural and polite in many everyday situations, especially in banking, payments, customer service, or texting.

If you want to sound a bit softer or more polite, you could add polite particles or address terms depending on who you are speaking to:

• Số tài khoản này đúng không ạ?
• Cho em hỏi, số tài khoản này đúng không ạ?

The ạ makes the sentence more polite, especially when speaking to a customer, an older person, or someone you do not know well.

In this sentence, đúng means correct / accurate.

• Số tài khoản này đúng không? = Is this account number correct?

Phải can mean correct in some contexts, but it more often means things like:

• right / correct in opinion
• must / have to
• to suit / to fit, in some expressions

For checking information such as a number, name, date, or address, đúng is the most natural word.

Examples:

• Tên này đúng không? = Is this name correct?
• Địa chỉ này đúng không? = Is this address correct?

Yes, sometimes.

• Số tài khoản đúng không? can be understood as Is the account number correct?
• Số tài khoản này đúng không? more clearly means Is this account number correct?

So này helps point to a specific account number, such as one shown on a screen, paper, or message.

If you are literally referring to the one in front of you, keeping này is usually best.

A careful pronunciation is roughly:

• Số tài khoản này đúng không?
• approximately: saw tai khoan nai doong khong?

A few notes:

• số has the ngã tone, which can be tricky for learners.
• tài khoản has two syllables in tài khoản, and khoản ends with -n.
• đúng has the sắc tone.
• không has a level tone in the standard northern pronunciation.

In natural speech, the whole sentence often has a rising checking-for-confirmation intonation at the end, even though Vietnamese is tonal.

It is commonly used when checking information such as:

• a bank transfer
• a payment form
• a screenshot someone sent
• a number typed into an app
• account details written on paper

For example:

• Someone sends you bank details, and you ask: Số tài khoản này đúng không?
• A clerk points to a number on a form and asks you to confirm it.
• You are helping someone fill out payment information and want to double-check the account number.

So the sentence is very practical and common in real communication.